WO2007092744A3 - Wireless communication unit and method for receiving a wireless signal - Google Patents
Wireless communication unit and method for receiving a wireless signal Download PDFInfo
- Publication number
- WO2007092744A3 WO2007092744A3 PCT/US2007/061501 US2007061501W WO2007092744A3 WO 2007092744 A3 WO2007092744 A3 WO 2007092744A3 US 2007061501 W US2007061501 W US 2007061501W WO 2007092744 A3 WO2007092744 A3 WO 2007092744A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- logic
- signal
- communication unit
- receiving
- wireless
- Prior art date
Links
Classifications
-
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
- H03M13/45—Soft decoding, i.e. using symbol reliability information
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/47—Error detection, forward error correction or error protection, not provided for in groups H03M13/01 - H03M13/37
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/61—Aspects and characteristics of methods and arrangements for error correction or error detection, not provided for otherwise
- H03M13/612—Aspects specific to channel or signal-to-noise ratio estimation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6577—Representation or format of variables, register sizes or word-lengths and quantization
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/65—Purpose and implementation aspects
- H03M13/6577—Representation or format of variables, register sizes or word-lengths and quantization
- H03M13/6591—Truncation, saturation and clamping
-
- 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
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/067—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
-
- 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
Abstract
A wireless communication unit (100) comprises a receiver for receiving a wireless signal having signal-to-noise ratio (SNR) measurement logic (112) for measuring a SNR value of the received signal and signal processing logic (108) arranged to process the received wireless signal. The signal processing logic comprises demodulator logic (255) operably coupled to log likelihood ratio (LLR) logic (262) and decoding logic (265). A scaling factor (Q) is applied to the LLR logic (262) dependent upon the measured signal-to-noise ratio.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07763525A EP1985026A4 (en) | 2006-02-03 | 2007-02-02 | Wireless communication unit and method for receiving a wireless signal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0602195A GB2434948B (en) | 2006-02-03 | 2006-02-03 | Wireless communication unit and method for receiving a wireless signal |
GB0602195.0 | 2006-02-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2007092744A2 WO2007092744A2 (en) | 2007-08-16 |
WO2007092744A3 true WO2007092744A3 (en) | 2008-06-19 |
WO2007092744B1 WO2007092744B1 (en) | 2008-08-21 |
Family
ID=36100992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/061501 WO2007092744A2 (en) | 2006-02-03 | 2007-02-02 | Wireless communication unit and method for receiving a wireless signal |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1985026A4 (en) |
GB (1) | GB2434948B (en) |
WO (1) | WO2007092744A2 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7876846B2 (en) | 2007-03-28 | 2011-01-25 | Aspen Acquisition Corporation | Method of QAM soft demapping |
US7551106B1 (en) | 2007-12-18 | 2009-06-23 | Telefonaktiebolaget Lm Ericsson (Publ) | Adjusting soft values to reduce bias |
WO2009086080A2 (en) * | 2007-12-21 | 2009-07-09 | Qualcomm Incorporated | Scaling and clipping of a digital received signal according to the modulation format of the measured c/ i |
US8073076B2 (en) | 2007-12-21 | 2011-12-06 | Qualcomm Incorporated | Method and apparatus for processing a communication signal |
EP2088725B1 (en) | 2008-02-11 | 2014-05-07 | Telefonaktiebolaget LM Ericsson (publ) | Technique for soft bit scaling |
US8311143B2 (en) * | 2008-03-31 | 2012-11-13 | Qualcomm Incorporated | Scaling methods and apparatus using SNR estimate to avoid overflow |
US9113364B2 (en) * | 2012-08-09 | 2015-08-18 | Microsoft Technology Licensing, Llc | Extended access point |
US9602236B2 (en) | 2013-06-18 | 2017-03-21 | Samsung Electronics Co., Ltd. | Computing system with decoding adjustment mechanism and method of operation thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5450453A (en) * | 1994-09-28 | 1995-09-12 | Motorola, Inc. | Method, apparatus and system for decoding a non-coherently demodulated signal |
US6377607B1 (en) * | 1999-05-13 | 2002-04-23 | Qualcomm Incorporated | System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation |
US20040081259A1 (en) * | 2002-10-24 | 2004-04-29 | Gerhard Ammer | Soft sample scaling in a turbo decoder |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7173990B2 (en) * | 2001-12-27 | 2007-02-06 | Dsp Group Inc. | Joint equalization, soft-demapping and phase error correction in wireless system with receive diversity |
US6966024B2 (en) * | 2002-12-31 | 2005-11-15 | Motorola, Inc. | Method and device for adaptive quantization of soft bits |
BR0318142A (en) * | 2003-02-26 | 2006-02-07 | Flarion Technologies Inc | Smooth information conversion for iterative decoding |
US7376209B2 (en) * | 2003-06-06 | 2008-05-20 | Qualcomm Incorporated | Method and apparatus for near-optimal scaling of log-likelihood ratio (LLR) computation in turbo decoding for hybrid automatic repeat request (ARQ) |
US6986096B2 (en) * | 2003-07-29 | 2006-01-10 | Qualcomm, Incorporated | Scaling and quantizing soft-decision metrics for decoding |
US7813453B2 (en) * | 2004-01-21 | 2010-10-12 | Qualcomm Incorporated | Data detection for a hierarchical coded data transmission |
-
2006
- 2006-02-03 GB GB0602195A patent/GB2434948B/en not_active Expired - Fee Related
-
2007
- 2007-02-02 WO PCT/US2007/061501 patent/WO2007092744A2/en active Application Filing
- 2007-02-02 EP EP07763525A patent/EP1985026A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5450453A (en) * | 1994-09-28 | 1995-09-12 | Motorola, Inc. | Method, apparatus and system for decoding a non-coherently demodulated signal |
US6377607B1 (en) * | 1999-05-13 | 2002-04-23 | Qualcomm Incorporated | System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation |
US6975669B2 (en) * | 1999-05-13 | 2005-12-13 | Qualcomm, Incorporated | System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation |
US20040081259A1 (en) * | 2002-10-24 | 2004-04-29 | Gerhard Ammer | Soft sample scaling in a turbo decoder |
Non-Patent Citations (1)
Title |
---|
See also references of EP1985026A4 * |
Also Published As
Publication number | Publication date |
---|---|
GB2434948B (en) | 2008-04-09 |
WO2007092744B1 (en) | 2008-08-21 |
GB0602195D0 (en) | 2006-03-15 |
EP1985026A4 (en) | 2012-12-19 |
WO2007092744A2 (en) | 2007-08-16 |
EP1985026A2 (en) | 2008-10-29 |
GB2434948A (en) | 2007-08-08 |
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