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Efficient Adaptive Equalizer Combined with LDPC Code for Vehicular Communications

Authors:
Do-Hoon Kim
Junyeong Bok
Heung-Gyoon Ryu

Keywords: LDPC; adapitve equalizer; CFO; phase noise; OFDM; Sparse Parity Check Matrix; iteration number.

Abstract:
Low density parity check (LDPC) code is very powerful for the error correction in the communication systems. So, LDPC code has been adopted for the standard of IEEE 802.11p (vehicular ad-hoc networks) and digital video broadcasting-satellite2 (DVB-S2). Features of LDPC code are iterative decoding and sparse parity check matrix. However, when multipath fading channel is considered, LDPC code needs long parity check matrix and pretty big iteration number of decoding. We propose a fast and efficient adaptive equalizer with LDPC code for compensating the carrier frequency offset (CFO) and phase noise in the vehicular environments. In addition, this proposed system has less iterations than the conventional system without combining structure. So, the proposed system has lower complexity. In this paper, we investigate the system model and evaluate BER performance for the vehicular environments by the simulation results, considering the CFO and phase noise in the OFDM system.

Pages: 18 to 22

Copyright: Copyright (c) IARIA, 2012

Publication date: June 24, 2012

Published in: conference

ISSN: 2327-2058

ISBN: 978-1-61208-241-7

Location: Venice, Italy

Dates: from June 24, 2012 to June 29, 2012