A PRACTICAL FORWARDING SCHEME FOR WIRELESS RELAY CHANNELS BASED ON THE QUANTIZATION OF LOG-LIKELIHOOD RATIOS

作者:Schwandter Stefan*; Matz Gerald
来源:2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2010-03-14 to 2010-03-19.
DOI:10.1109/ICASSP.2010.5494900

摘要

This paper considers a wireless relay network with one source, one relay, and one destination. We propose a low-complexity quantize-and-forward (QF) scheme in which the relay calculates log-likelihood ratios (LLRs) for the code bits transmitted by the source and passes quantized versions of these LLRs on to the destination. The destination combines the LLRs from the source-destination link and the quantized LLRs from the source-relay link to obtain improved information bit estimates. We verify the usefulness of the proposed scheme via numerical simulations in block and fast fading.

  • 出版日期2010