ORDERED RETRANSMISSIONS FOR ARQ IN MULTICARRIER SYSTEMS

摘要

A first data symbol that includes a k<SUP>th </SUP>data bit is received over a multicarrier system. A first channel quality parameter is estimated for the first data symbol. A second data symbol that includes a retransmitted k<SUP>th </SUP>data bit is received. A second channel quality parameter for the second data symbol is estimated. A probable value of the k<SUP>th </SUP>data bit is determined based on both the first channel quality parameter and the second channel quality parameter. In response to an ARQ for data symbols communicated over a multicarrier system, the following are performed: determining channel quality parameters, each of the channel quality parameters corresponding to at least one of the transmitted data symbols; selecting a subset of the channel quality parameters exhibiting a worst quality; constructing a block of data symbols corresponding to the subset; and communicating the block of data symbols over a plurality of subcarriers.