TW429719B - Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDM - Google Patents
Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDMInfo
- Publication number
- TW429719B TW429719B TW88109473A TW88109473A TW429719B TW 429719 B TW429719 B TW 429719B TW 88109473 A TW88109473 A TW 88109473A TW 88109473 A TW88109473 A TW 88109473A TW 429719 B TW429719 B TW 429719B
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- TW
- Taiwan
- Prior art keywords
- samples
- frequency
- sequence
- received
- domain
- Prior art date
Links
- 108010076504 Protein Sorting Signals Proteins 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 2
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Transmission of a sequence of data samples includes transmission of a sandwich preamble (""sandamble"") that has a first preamble that precedes the sequence of data samples, and a second preamble that follows the sequence of data samples. The sandamble may include several guard regions, including an extended guard region. Various repetitions of data in the sandamble make it useful for aiding time and frequency synchronization of the received signal when it has been subjected to a dispersive channel. In another aspect, a coarse estimate of a frame start position of a received sequence of desired data samples in a received signal sequence may be improved by using the coarse estimate to generate frequency-domain received samples. A frequency-domain correlation is then determined between the frequency-domain received samples and noiseless samples. The improved estimate of the starting position of the sequence of desired samples in the received signal sequence may then be generated based on an argument of the frequency-domain correlation between the frequency-domain received samples and the noiseless samples. The noiseless samples may be generated by demodulating symbols contained in the received signal sequence. In alternative embodiments, the noiseless samples may be generated from pilot symbols that have been multiplexed into the sequence of received samples.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US8843898P | 1998-06-08 | 1998-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW429719B true TW429719B (en) | 2001-04-11 |
Family
ID=22211380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW88109473A TW429719B (en) | 1998-06-08 | 1999-06-08 | Burst carrier frequency synchronization and iterative frequency-domain frame synchronization for OFDM |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TW429719B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8363577B2 (en) | 2005-05-13 | 2013-01-29 | Qualcomm Incorporated | Low complexity beamforming for multiple antenna systems |
| US8842666B2 (en) | 2005-05-13 | 2014-09-23 | Qualcomm Incorporated | Methods and apparatus for packetization of content for transmission over a network |
| TWI498007B (en) * | 2007-06-15 | 2015-08-21 | Via Tech Inc | Correlation interval synchronization apparatus and method |
-
1999
- 1999-06-08 TW TW88109473A patent/TW429719B/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8363577B2 (en) | 2005-05-13 | 2013-01-29 | Qualcomm Incorporated | Low complexity beamforming for multiple antenna systems |
| US8441969B2 (en) | 2005-05-13 | 2013-05-14 | Qualcomm Incorporated | Low complexity beamforming for multiple antenna systems |
| US8842666B2 (en) | 2005-05-13 | 2014-09-23 | Qualcomm Incorporated | Methods and apparatus for packetization of content for transmission over a network |
| TWI498007B (en) * | 2007-06-15 | 2015-08-21 | Via Tech Inc | Correlation interval synchronization apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GD4A | Issue of patent certificate for granted invention patent | ||
| MM4A | Annulment or lapse of patent due to non-payment of fees |