Iterative Equalization and Decoding for Short Range Communication at 60 GHz

摘要

Progress in device technology lets coherent communication schemes for short range communications at 60 GHz appear as a feasible approach in the near future. However, impairments due to nonlinearities that limit the achievable SNR values as well as strongly variable transmission conditions with their associated SINR variations should be taken into account. In this work we propose to use LDPC codes that can be matched to channel conditions and equalizer performance by pilot and data block length as well as code rate adaptation for this task. We demonstrate that we can outperform rate-compatible punctured convolutional RCPC codes in terms of required SNR for semiblind operation with iterative processing at the receiver with LDPC codes based on Accumulate-Repeat-Accumulate (ARA) codes. Such codes appear suitable for high data rates, because they allow efficient encoder and decoder implementations.