Please use this identifier to cite or link to this item:
Title: A non-resampling sequential Monte Carlo detector for coded OFDM systems based on periodic termination of differential phase trellis
Authors: John, T.S.
Nallanathan, A. 
Armand, M.A. 
Keywords: Coded modulation
Iterative receivers
Orthogonal frequency division multiplexing (OFDM)
Sequential Monte Carlo methods
Issue Date: Jul-2006
Citation: John, T.S., Nallanathan, A., Armand, M.A. (2006-07). A non-resampling sequential Monte Carlo detector for coded OFDM systems based on periodic termination of differential phase trellis. IEEE Transactions on Wireless Communications 5 (7) : 1846-1856. ScholarBank@NUS Repository.
Abstract: Sequential Monte Carlo (SMC) is a group of methods that use Monte Carlo simulation to solve online estimation problems in dynamic systems. SMC methods are traditionally built on the techniques of sequential importance sampling (SIS) and resampling. In this paper, we apply the SMC methodology to the problem of symbol detection in a differentially encoded orthogonal frequency division multiplexing (OFDM) system over a frequency selective fading channel. We first propose the periodical termination of differential phase trellis at predetermined indices. It is seen that accelerated weight degeneracy and impoverished trajectory diversity - problems that are encountered in traditional SMC methods - are mitigated. Using these observations, a novel SMC framework that circumvents resampling is then developed. The effect of varying termination periods on the performance of the non-resampling detector is investigated. We also present results which show that periodic termination helps to retard weight degeneracy. The performance of traditional and non-resampling SMC detectors for a convolutional-coded OFDM system is compared and simulation results suggest that the nonresampling detector performs better than its traditional counter-part. We also consider a low-density parity check (LDPC)-coded OFDM system and simulation results suggest the near bound performance of the proposed non-resampling SMC detector. © 2006 IEEE.
Source Title: IEEE Transactions on Wireless Communications
ISSN: 15361276
DOI: 10.1109/TWC.2006.1673096
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Dec 1, 2020


checked on Nov 23, 2020

Page view(s)

checked on Dec 1, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.