公开(公告)号：EP1844569A2

公开(公告)日：2007-10-17

申请号：EP06734437.4

申请日：2006-01-31

Applicant: QUALCOMM INCORPORATED

Inventor： VISVANATHAN, Arun ,  BUTALA, Amit ,  SUBRAHMANYA, Parvathanathan

IPC: H04L1/00 ,  H04B7/005

CPC classification number: H04W52/12 ,  H04B1/7172 ,  H04L1/20 ,  H04L1/201 ,  H04L1/208 ,  H04W52/18 ,  H04W52/20 ,  H04W52/24 ,  H04W52/44

Abstract: 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.