| Title of Invention | ESTIMATING BIT ERROR PROBABILITY (BEP) IN AN EDGE WIRELESS SYSTEM |
|---|---|
| Abstract | Distribution parameter mapping determines the bit error probability (BEP) of a burst transmitted from a base station to the mobile station using a modulation and coding scheme (MCS) specified in the EDGE standard. Depending on whether the multi-bit soft decisions of the burst most resemble a Gaussian or a Rician distribution, the statistical parameters µ and &sgr; or A and &sgr; are determined. The ratio µ/&sgr; or A/&sgr; is mapped to an empirically determined BEP in a Gaussian or Rician lookup table, respectively. The BEPs are not influenced by the degree of code redundancy in the MCS. The BEPs for the four bursts in a radio block are then averaged, filtered and quantized according to the EDGE standard. The quantization level of the average BEP is reported to the base station so that subsequent radio blocks can be transmitted using an MCS that is appropriate for the estimated BEP. |
| Full Text | Field of the invention The present invention relates generally to wireless communcation devices...... |
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| Patent Number | 254859 | ||||||||
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| Indian Patent Application Number | 19/MUMNP/2008 | ||||||||
| PG Journal Number | 52/2012 | ||||||||
| Publication Date | 28-Dec-2012 | ||||||||
| Grant Date | 27-Dec-2012 | ||||||||
| Date of Filing | 04-Jan-2008 | ||||||||
| Name of Patentee | QUALCOMM INCORPORATED | ||||||||
| Applicant Address | 5775 MOREHOUSE DRIVE, SAN DIEGO, CALIFORNIA 92121, | ||||||||
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| PCT International Classification Number | H04L1/20 | ||||||||
| PCT International Application Number | PCT/US2006/024502 | ||||||||
| PCT International Filing date | 2006-06-22 | ||||||||
PCT Conventions:
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