TITLE:
A High Spectral Efficient Non-Binary TCM Scheme-Based Novel Decoding Algorithm for 4G Systems
AUTHORS:
Riyadh A. Al-Hilali, Raad H. Thaher, Abdulkareem S. Abdallah
KEYWORDS:
Convolutional Codes; Trellis Code Modulation(TCM); Non-Binary Error Correcting Codes; Groups; Rings of Integers; OFDM; MIMO; MIMO-OFDM; STBC
JOURNAL NAME:
Communications and Network,
Vol.5 No.4,
November
14,
2013
ABSTRACT: This paper deals with the MIMO-OFDM technique that is
applied to the fourth generation (4G) of the wireless communication systems,
this technique can provide high data rate transmission without increasing
transmit power and expanding bandwidth, it can also efficiently use space
resources and has a bright future. It presents the channel coding assisted
STBC-OFDM systems, and employs the Coded Modulation techniques (CM), since the
signal bandwidth available for wireless communications is limited. The
proposed system deals with Non-binary error control coding of the TCM-aided STBC-OFDM
scheme for transmissions over the Rayleigh channel. A new non-binary decoding
method, Yaletharatalhussein decoding algorithm, is designed and implemented for
decoding non-binary convolutional codes, which is based on
the trellis diagram representing the convolutional encoder. Yaletharatalhussein
decoding algorithm outperforms the Viterbi algorithm and other algorithms in
its simplicity, very small computational complexity, decoding reliability for
high states TCM codes that are suitable for Fourth-Generation (4G),
decreasing errors with increasing word length, and easy to implement with
real-time applications. The simulation results show that the performance
of the non-binary TCM-based Yaletharatalhussein decoding
algorithm-assisted STBC-OFDM scheme outperforms the binary and non-binary
decoding methods.