A High Spectral Efficient Non-Binary TCM Scheme-Based Novel Decoding Algorithm for 4G Systems


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.

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R. Al-Hilali, R. Thaher and A. Abdallah, "A High Spectral Efficient Non-Binary TCM Scheme-Based Novel Decoding Algorithm for 4G Systems," Communications and Network, Vol. 5 No. 4, 2013, pp. 296-304. doi: 10.4236/cn.2013.54037.

Conflicts of Interest

The authors declare no conflicts of interest.


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