发明名称 |
ERASURE DETECTION FOR A TRANSPORT CHANNEL WITH AN UNKNOWN FORMAT |
摘要 |
To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block. |
申请公布号 |
EP1844569(A2) |
申请公布日期 |
2007.10.17 |
申请号 |
EP20060734437 |
申请日期 |
2006.01.31 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
VISVANATHAN, ARUN;BUTALA, AMIT;SUBRAHMANYA, PARVATHANATHAN |
分类号 |
H04L1/00;H04B7/005;H04W52/12;H04W52/18;H04W52/20;H04W52/24;H04W52/44 |
主分类号 |
H04L1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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