DEVICES AND METHODS FOR DATA RECOVERY OF CONTROL CHANNELS IN WIRELESS COMMUNICATIONS

摘要

Aspects of the present disclosure provide an apparatus and methods for recovering data from a control channel in wireless communications. An apparatus decodes a CRC appended codeword to obtain a decoded codeword, and computes a first syndrome of the decoded codeword utilizing a parity check matrix. If the first syndrome is non-zero. The apparatus determines a location S and a length K of an error pattern in bits of the decoded codeword, an index set ε based on the values of S and K. A linear system is formed based on the parity check matrix and the error pattern in accordance with the index set ε. The apparatus determines a solution of the linear system, wherein the solution includes an estimated error pattern. A recovered codeword can be determined by removing the estimated error pattern from the decoded codeword.

主权项

1. A method of recovering a codeword in wireless communications, comprising:
receiving a cyclic redundancy check (CRC) appended codeword from a wireless channel; decoding the CRC appended codeword to obtain the decoded codeword; computing a first syndrome of the decoded codeword utilizing a parity check matrix; if the first syndrome is non-zero, determining a location S and a length K of an error pattern in bits of the decoded codeword; determining an index set ε based on the values of S and K; forming a linear system based on the parity check matrix and the error pattern in accordance with the index set ε; determining a solution of the linear system, wherein the solution comprises an estimated error pattern; and determining a recovered codeword by removing the estimated error pattern from the decoded codeword.