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Performance of Low-Density Parity Check with Space-Time Block Coded MC-CDMA Systems and Soft-Interference Cancellation

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2 Author(s)
Luis Alberto Paredes Hernandez ; Dept. de Señales, Sistemas y Radiocomunicaciones. Universidad Politécnica de Madrid (UPM), Spain. ; Mariano Garcia Otero

This paper analyzes several interference cancellation scheme applied to low-density parity check with space-time block coded for MC-CDMA systems and soft-interference cancellation. In these systems, a linear MMSE detector is conventionally used to reduce interference generated by multipath, multiuser, and multiple antennas propagation. To obtain further performance improvements, a more efficient SOVA-based iterative MMSE scheme is considered. This receiver performs soft-interference cancellation for every user based on a combination of the MMSE criterion and the turbo processing principle. It is shown that these block space-time concatenated with LDPC detectors can potentially provide significant capacity enhancements over the conventional matched filter receiver

Published in:

2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications

Date of Conference:

2-5 July 2006