[go: up one dir, main page]

TW363312B - Method and apparatus for determining the rate of received data in a variable rate communication system - Google Patents

Method and apparatus for determining the rate of received data in a variable rate communication system

Info

Publication number
TW363312B
TW363312B TW086115038A TW86115038A TW363312B TW 363312 B TW363312 B TW 363312B TW 086115038 A TW086115038 A TW 086115038A TW 86115038 A TW86115038 A TW 86115038A TW 363312 B TW363312 B TW 363312B
Authority
TW
Taiwan
Prior art keywords
ser
check
rate
values
rates
Prior art date
Application number
TW086115038A
Other languages
English (en)
Inventor
Tao Chen
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of TW363312B publication Critical patent/TW363312B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0262—Arrangements for detecting the data rate of an incoming signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0046—Code rate detection or code type detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Communication Control (AREA)
  • Error Detection And Correction (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
TW086115038A 1996-10-18 1997-10-14 Method and apparatus for determining the rate of received data in a variable rate communication system TW363312B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/730,863 US5751725A (en) 1996-10-18 1996-10-18 Method and apparatus for determining the rate of received data in a variable rate communication system

Publications (1)

Publication Number Publication Date
TW363312B true TW363312B (en) 1999-07-01

Family

ID=24937097

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086115038A TW363312B (en) 1996-10-18 1997-10-14 Method and apparatus for determining the rate of received data in a variable rate communication system

Country Status (15)

Country Link
US (1) US5751725A (zh)
EP (2) EP0932963B1 (zh)
JP (1) JP3889448B2 (zh)
KR (1) KR100559099B1 (zh)
CN (1) CN1124726C (zh)
AT (2) ATE432577T1 (zh)
AU (1) AU4822097A (zh)
BR (1) BR9712354A (zh)
CA (1) CA2268857C (zh)
DE (2) DE69735673T2 (zh)
ES (1) ES2260786T3 (zh)
IL (1) IL129305A0 (zh)
RU (1) RU99109991A (zh)
TW (1) TW363312B (zh)
WO (1) WO1998018242A1 (zh)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6108372A (en) * 1996-10-30 2000-08-22 Qualcomm Inc. Method and apparatus for decoding variable rate data using hypothesis testing to determine data rate
US6094465A (en) * 1997-03-21 2000-07-25 Qualcomm Incorporated Method and apparatus for performing decoding of CRC outer concatenated codes
US6094428A (en) * 1997-04-30 2000-07-25 Motorola, Inc. Method and apparatus for transmission and reception of a transmission rate in a CDMA communication system
US6377809B1 (en) 1997-09-16 2002-04-23 Qualcomm Incorporated Channel structure for communication systems
US9118387B2 (en) 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US7184426B2 (en) 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US6112325A (en) * 1998-01-23 2000-08-29 Dspc Technologies, Ltd. Method and device for detecting rate
US6603751B1 (en) * 1998-02-13 2003-08-05 Qualcomm Incorporated Method and system for performing a handoff in a wireless communication system, such as a hard handoff
ATE439021T1 (de) 1998-02-13 2009-08-15 Qualcomm Inc Verfahren und system zur durchführung einer weiterleitung in einem drahtlosen kommunikationssystem, z. b. einer harten weiterleitung
US6307867B1 (en) * 1998-05-14 2001-10-23 Telefonaktiebolaget Lm Ericsson (Publ) Data transmission over a communications link with variable transmission rates
US20030194033A1 (en) 1998-05-21 2003-10-16 Tiedemann Edward G. Method and apparatus for coordinating transmission of short messages with hard handoff searches in a wireless communications system
FR2779591B1 (fr) * 1998-06-03 2000-09-01 Nortel Matra Cellular Transmission de paquets codes sans identification du code employe
US6334197B1 (en) * 1998-08-17 2001-12-25 Hughes Electronics Corporation Turbo code interleaver with near optimal performance
US6847658B1 (en) 1998-12-10 2005-01-25 Qualcomm, Incorporated Demultiplexer for channel interleaving
KR100322019B1 (ko) * 1999-02-10 2002-02-04 윤종용 부호분할 다중접속 단말기의 전송률 검출 방법
US6587446B2 (en) * 1999-02-11 2003-07-01 Qualcomm Incorporated Handoff in a wireless communication system
US6567466B1 (en) * 1999-02-16 2003-05-20 Agere Systems Inc. Method and apparatus for determining the data rate of a received signal in a variable data rate orthogonal spread spectrum communication system
US6681203B1 (en) 1999-02-26 2004-01-20 Lucent Technologies Inc. Coupled error code protection for multi-mode vocoders
US6597922B1 (en) 1999-05-14 2003-07-22 Qualcomm Incorporated Method and apparatus for efficient candidate frequency search while initiating a handoff in a code division multiple access communication system
US6633601B1 (en) * 1999-05-28 2003-10-14 Koninklijke Philips Electronics N.V. Method and device for frame rate determination using correlation metrics and frame quality indicators
FI107676B (fi) 1999-06-21 2001-09-14 Nokia Mobile Phones Ltd Menetelmä ja järjestely tietyn signaalinkäsittelymetodin käyttämiseksi informaation välittämiseen
CN1162996C (zh) * 1999-07-08 2004-08-18 三星电子株式会社 用于移动通信系统的数据速率检测设备和方法
AU2007240231B2 (en) * 1999-08-11 2010-10-07 Qualcomm Incorporated Method and system for performing a handoff in a wireless communication system, such as a hard handoff
AU2004203065B2 (en) * 1999-08-11 2008-01-10 Qualcomm Incorporated Method and system for performing a handoff in a wireless communication system, such as a hard handoff
US8064409B1 (en) 1999-08-25 2011-11-22 Qualcomm Incorporated Method and apparatus using a multi-carrier forward link in a wireless communication system
US6621804B1 (en) 1999-10-07 2003-09-16 Qualcomm Incorporated Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
US7010001B2 (en) * 2000-01-10 2006-03-07 Qualcomm, Incorporated Method and apparatus for supporting adaptive multi-rate (AMR) data in a CDMA communication system
US6598189B1 (en) * 2000-04-28 2003-07-22 Nortel Networks Limited Method and apparatus for determining the rate and quality of received data in a variable rate digital communication system
US7080009B2 (en) * 2000-05-01 2006-07-18 Motorola, Inc. Method and apparatus for reducing rate determination errors and their artifacts
US7159164B1 (en) 2000-06-05 2007-01-02 Qualcomm Incorporated Method and apparatus for recovery of particular bits of a frame
US6654928B1 (en) * 2000-07-20 2003-11-25 Nokia Mobile Phones Limited Hybrid dimensional, spherical space-time coding and decoding apparatus, and associated method, for a communication system
US7068683B1 (en) 2000-10-25 2006-06-27 Qualcomm, Incorporated Method and apparatus for high rate packet data and low delay data transmissions
US6973098B1 (en) 2000-10-25 2005-12-06 Qualcomm, Incorporated Method and apparatus for determining a data rate in a high rate packet data wireless communications system
US6804218B2 (en) * 2000-12-04 2004-10-12 Qualcomm Incorporated Method and apparatus for improved detection of rate errors in variable rate receivers
US7746832B2 (en) * 2001-01-05 2010-06-29 Qualcomm Incorporated Method and apparatus for supporting adaptive multi-rate (AMR) data in a CDMA communication system
US6850499B2 (en) 2001-01-05 2005-02-01 Qualcomm Incorporated Method and apparatus for forward power control in a communication system
US7003045B2 (en) * 2001-01-31 2006-02-21 Motorola, Inc. Method and apparatus for error correction
US7120134B2 (en) 2001-02-15 2006-10-10 Qualcomm, Incorporated Reverse link channel architecture for a wireless communication system
US7076005B2 (en) 2001-02-15 2006-07-11 Qualcomm, Incorporated System and method for transmission format detection
US6975868B2 (en) * 2001-02-21 2005-12-13 Qualcomm Incorporated Method and apparatus for IS-95B reverse link supplemental code channel frame validation and fundamental code channel rate decision improvement
US7065159B2 (en) * 2001-03-14 2006-06-20 Lucent Technologies Inc. Compensation based bit-error-rate estimation for convolutionally encoded transmissions in wireless systems
US6763244B2 (en) * 2001-03-15 2004-07-13 Qualcomm Incorporated Method and apparatus for adjusting power control setpoint in a wireless communication system
US6760576B2 (en) 2001-03-27 2004-07-06 Qualcomm Incorporated Method and apparatus for enhanced rate determination in high data rate wireless communication systems
US6732321B2 (en) * 2001-03-27 2004-05-04 Motorola, Inc. Method, apparatus, and article of manufacture for error detection and channel management in a communication system
US8077679B2 (en) 2001-03-28 2011-12-13 Qualcomm Incorporated Method and apparatus for providing protocol options in a wireless communication system
US9100457B2 (en) 2001-03-28 2015-08-04 Qualcomm Incorporated Method and apparatus for transmission framing in a wireless communication system
US8121296B2 (en) * 2001-03-28 2012-02-21 Qualcomm Incorporated Method and apparatus for security in a data processing system
US7308050B2 (en) * 2001-06-08 2007-12-11 Broadcom Corporation Detection and mitigation of temporary impairments in a communications channel
US7570576B2 (en) * 2001-06-08 2009-08-04 Broadcom Corporation Detection and mitigation of temporary (bursts) impairments in channels using SCDMA
US7058035B2 (en) * 2001-06-29 2006-06-06 Qualcomm, Indorporated Communication system employing multiple handoff criteria
US7787389B2 (en) * 2001-08-20 2010-08-31 Qualcomm Incorporated Method and system for utilization of an outer decoder in a broadcast services communication system
US7185362B2 (en) * 2001-08-20 2007-02-27 Qualcomm, Incorporated Method and apparatus for security in a data processing system
US7352868B2 (en) 2001-10-09 2008-04-01 Philip Hawkes Method and apparatus for security in a data processing system
US7649829B2 (en) 2001-10-12 2010-01-19 Qualcomm Incorporated Method and system for reduction of decoding complexity in a communication system
US7177658B2 (en) 2002-05-06 2007-02-13 Qualcomm, Incorporated Multi-media broadcast and multicast service (MBMS) in a wireless communications system
US7111226B1 (en) * 2002-05-31 2006-09-19 Broadcom Corporation Communication decoder employing single trellis to support multiple code rates and/or multiple modulations
US8699505B2 (en) * 2002-05-31 2014-04-15 Qualcomm Incorporated Dynamic channelization code allocation
RU2330385C2 (ru) 2002-08-21 2008-07-27 Квэлкомм Инкорпорейтед Способ и система передачи информационного наполнения в системе передачи широковещательных услуг
US7020109B2 (en) * 2002-08-21 2006-03-28 Qualcomm Incorporated Method and system for communicating content on a broadcast services communication system
US7016327B2 (en) * 2002-08-21 2006-03-21 Qualcomm Incorporated Method and system for communicating content on a broadcast services communication system
US6901083B2 (en) * 2002-10-25 2005-05-31 Qualcomm, Incorporated Method and system for code combining at an outer decoder on a communication system
US7505534B1 (en) * 2002-11-04 2009-03-17 Nortel Networks Limited Method for determination of discontinuous transmission, frame erasure, and rate
US7599655B2 (en) 2003-01-02 2009-10-06 Qualcomm Incorporated Method and apparatus for broadcast services in a communication system
US8306562B2 (en) * 2003-05-29 2012-11-06 Texas Instruments Incorporated Signal-to-interference ratio target control for multi-data-rate communication systems
US7933250B2 (en) * 2003-06-23 2011-04-26 Qualcomm Incorporated Code channel management in a wireless communications system
US7124332B2 (en) * 2003-06-30 2006-10-17 Intel Corporation Failure prediction with two threshold levels
US8098818B2 (en) * 2003-07-07 2012-01-17 Qualcomm Incorporated Secure registration for a multicast-broadcast-multimedia system (MBMS)
US8718279B2 (en) 2003-07-08 2014-05-06 Qualcomm Incorporated Apparatus and method for a secure broadcast system
US7292873B2 (en) * 2003-08-07 2007-11-06 Qualcomm Incorporated Method and apparatus for regulating base station ACK/NAK message transmit power in a wireless communication system
US7318187B2 (en) * 2003-08-21 2008-01-08 Qualcomm Incorporated Outer coding methods for broadcast/multicast content and related apparatus
US8694869B2 (en) 2003-08-21 2014-04-08 QUALCIMM Incorporated Methods for forward error correction coding above a radio link control layer and related apparatus
US8804761B2 (en) * 2003-08-21 2014-08-12 Qualcomm Incorporated Methods for seamless delivery of broadcast and multicast content across cell borders and/or between different transmission schemes and related apparatus
US8724803B2 (en) 2003-09-02 2014-05-13 Qualcomm Incorporated Method and apparatus for providing authenticated challenges for broadcast-multicast communications in a communication system
US7010469B2 (en) * 2003-09-30 2006-03-07 International Business Machines Corporation Method of computing partial CRCs
KR101002814B1 (ko) 2003-10-02 2010-12-21 삼성전자주식회사 패킷 데이터 서비스를 제공하는 이동통신 시스템에서순방향 패킷 데이터 제어 채널 수신 장치 및 방법
US8072942B2 (en) * 2003-11-26 2011-12-06 Qualcomm Incorporated Code channel management in a wireless communications system
US7730381B2 (en) * 2004-06-09 2010-06-01 Qualcomm Incorporated Erasure detection and power control for a transport channel with unknown format in a wireless communication system
FI20045318A0 (fi) * 2004-09-01 2004-09-01 Nokia Corp Kommunikointijärjestelmä, vastaanotin, ja menetelmä arvioida vastaanotetun signaalin laatua
CA2876137C (en) 2004-09-25 2016-09-13 Tq Delta, Llc Crc counter normalization
US20060084459A1 (en) * 2004-10-13 2006-04-20 Vinh Phan Outer loop power control of user equipment in wireless communication
US8074158B2 (en) * 2005-02-02 2011-12-06 Qualcomm Incorporated Erasure detection for a transport channel with an unknown format
KR101111515B1 (ko) * 2005-02-02 2014-05-07 엘지전자 주식회사 데이터 송수신 방법
WO2006106377A1 (en) * 2005-04-07 2006-10-12 Nokia Corporation Blind transport format detection based on decoder metric
US9071344B2 (en) 2005-08-22 2015-06-30 Qualcomm Incorporated Reverse link interference cancellation
US8594252B2 (en) 2005-08-22 2013-11-26 Qualcomm Incorporated Interference cancellation for wireless communications
US8611305B2 (en) * 2005-08-22 2013-12-17 Qualcomm Incorporated Interference cancellation for wireless communications
US8630602B2 (en) * 2005-08-22 2014-01-14 Qualcomm Incorporated Pilot interference cancellation
US8743909B2 (en) * 2008-02-20 2014-06-03 Qualcomm Incorporated Frame termination
JP2007195076A (ja) * 2006-01-20 2007-08-02 Nec Corp 無線通信システムとその送信電力制御方法および装置
JP4771835B2 (ja) * 2006-03-06 2011-09-14 株式会社リコー トナー及び画像形成方法
US8920343B2 (en) 2006-03-23 2014-12-30 Michael Edward Sabatino Apparatus for acquiring and processing of physiological auditory signals
KR20080003537A (ko) * 2006-07-03 2008-01-08 엘지전자 주식회사 이동 단말기의 통화 중 노이즈 제거 방법 및 이를 위한이동 단말기
US8831140B2 (en) * 2007-03-16 2014-09-09 Altera Corporation Protocol-agnostic automatic rate negotiation for high-speed serial interface in a programmable logic device
US9408165B2 (en) * 2008-06-09 2016-08-02 Qualcomm Incorporated Increasing capacity in wireless communications
US9277487B2 (en) 2008-08-01 2016-03-01 Qualcomm Incorporated Cell detection with interference cancellation
US9237515B2 (en) * 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
US20100097955A1 (en) * 2008-10-16 2010-04-22 Qualcomm Incorporated Rate determination
US8964692B2 (en) * 2008-11-10 2015-02-24 Qualcomm Incorporated Spectrum sensing of bluetooth using a sequence of energy detection measurements
US9160577B2 (en) * 2009-04-30 2015-10-13 Qualcomm Incorporated Hybrid SAIC receiver
US8446868B2 (en) * 2009-05-07 2013-05-21 Qualcomm Incorporated Method and apparatus for processing blind decoding results in a wireless communication system
US8787509B2 (en) * 2009-06-04 2014-07-22 Qualcomm Incorporated Iterative interference cancellation receiver
CN101673296B (zh) * 2009-09-02 2011-07-20 太仓市同维电子有限公司 数据通讯过程中文件校验的方法
US8831149B2 (en) * 2009-09-03 2014-09-09 Qualcomm Incorporated Symbol estimation methods and apparatuses
US8811200B2 (en) 2009-09-22 2014-08-19 Qualcomm Incorporated Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems
KR101363016B1 (ko) 2009-11-27 2014-02-13 퀄컴 인코포레이티드 무선 통신들에서의 용량 증가
WO2011063568A1 (en) 2009-11-27 2011-06-03 Qualcomm Incorporated Increasing capacity in wireless communications
US10038569B2 (en) * 2016-03-29 2018-07-31 Intel IP Corporation Self-adapting baud rate

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4748626A (en) * 1987-01-28 1988-05-31 Racal Data Communications Inc. Viterbi decoder with reduced number of data move operations
US4845714A (en) * 1987-06-08 1989-07-04 Exabyte Corporation Multiple pass error correction process and apparatus for product codes
US5023889A (en) * 1988-05-31 1991-06-11 California Institute Of Technology Trellis coded multilevel DPSK system with doppler correction for mobile satellite channels
US5056117A (en) * 1989-08-07 1991-10-08 At&T Bell Laboratories Decision feedback equalization with trellis coding
CA2020899C (en) * 1989-08-18 1995-09-05 Nambirajan Seshadri Generalized viterbi decoding algorithms
US5485486A (en) * 1989-11-07 1996-01-16 Qualcomm Incorporated Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system
US5416787A (en) * 1991-07-30 1995-05-16 Kabushiki Kaisha Toshiba Method and apparatus for encoding and decoding convolutional codes
JP2683665B2 (ja) * 1991-11-27 1997-12-03 日本電気株式会社 最尤系列推定装置
IL104412A (en) * 1992-01-16 1996-11-14 Qualcomm Inc Method and apparatus for the formatting of data for transmission
US5509020A (en) * 1993-05-27 1996-04-16 Sony Corporation Viterbi decoding apparatus and methods
ES2110248T3 (es) * 1993-06-18 1998-02-01 Qualcomm Inc Metodo y aparato para determinar la velocidad de transmision de datos de una señal recibida.
US5566206A (en) * 1993-06-18 1996-10-15 Qualcomm Incorporated Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver
ZA947317B (en) * 1993-09-24 1995-05-10 Qualcomm Inc Multirate serial viterbi decoder for code division multiple access system applications

Also Published As

Publication number Publication date
DE69739430D1 (de) 2009-07-09
WO1998018242A1 (en) 1998-04-30
IL129305A0 (en) 2000-02-17
DE69735673T2 (de) 2007-03-29
US5751725A (en) 1998-05-12
DE69735673D1 (de) 2006-05-24
JP2001505377A (ja) 2001-04-17
ATE323365T1 (de) 2006-04-15
CA2268857A1 (en) 1998-04-30
EP1478144A1 (en) 2004-11-17
EP0932963B1 (en) 2006-04-12
RU99109991A (ru) 2003-03-10
HK1024362A1 (zh) 2000-10-05
ATE432577T1 (de) 2009-06-15
EP0932963A1 (en) 1999-08-04
BR9712354A (pt) 1999-08-31
EP1478144B1 (en) 2009-05-27
HK1072846A1 (zh) 2005-09-09
KR100559099B1 (ko) 2006-03-15
CN1234160A (zh) 1999-11-03
JP3889448B2 (ja) 2007-03-07
CN1124726C (zh) 2003-10-15
ES2260786T3 (es) 2006-11-01
AU4822097A (en) 1998-05-15
CA2268857C (en) 2008-09-09
KR20000049248A (ko) 2000-07-25

Similar Documents

Publication Publication Date Title
TW363312B (en) Method and apparatus for determining the rate of received data in a variable rate communication system
RU2130693C1 (ru) Способ повышения качества текущего речевого кадра в радиосистеме многостанционного доступа с временным разделением каналов и система для осуществления способа
KR0176993B1 (ko) 데이타 속도 검출기
US5432778A (en) Method and an arrangement for frame detection quality estimation in the receiver of a radio communication system
EP0815667B1 (en) A method for frame quality detection and a receiver
EP0669026B1 (en) Method and apparatus for erasing bad frames of information in a communication system
TW429707B (en) Apparatus and methods for determining rate of transmitted variable rate data
US5799039A (en) Method and apparatus for error mitigating a received communication signal
DE60043732D1 (de) Verfahren und vorrichtung zur detektierung von null-raten-rahmen in einem kommunikationssystem
CA2229453A1 (en) Data transmitting method, data transmitting system transmitter, and receiver
SI0680675T1 (en) Communication process in a radio telephone system
ATE293320T1 (de) Übertragung von signalisierungsdaten in einem drahtlosen kommunikationssystem mit einstellbarer datenrate
GB2358335A (en) Rate detection in radio communication systems
US5694429A (en) Mobile radio communication system
US5987631A (en) Apparatus for measuring bit error ratio using a viterbi decoder
EP0983655B1 (en) Bit detection method in a radio communications system
AU758071B2 (en) Detection of code vectors in single frequency, multiple transmitter networks
EP0552781A2 (en) Voice signal communication with burst error reduction
GB2331681A (en) Error detection method and apparatus for digital communication data packets
US5815533A (en) Receive processor device for use in a digital mobile radio systems
WO2003039058A2 (en) Estimation of channel parameters using re-encoding
KR100204593B1 (ko) 이동통신 페이딩 채널에서의 디코딩 장치
JP3383561B2 (ja) 復号品質推定装置
JPS5767349A (en) Data transmission device
Jalaludeen et al. Rate decision at the IS-95A CDMA handset receiver