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Transmission efficient modulation based on constellation switching in wireless communication

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3 Author(s)
Wei Lu ; Dept. of Electron. & Inf. Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China ; Desheng Wang ; Yingzhuang Liu

In this paper we propose a new efficient data modulation method, which is based on constellation switching modulation (CSM). The original bit stream is divided into sub-blocks, and each sub-block is modulated according to the constellation indicated by the constellation indicating bits (CIB) which are composed of data bits and parity bits. Error-correction coding (ECC) is used to produce the parity bits for the improvement of the robustness of constellation estimation and bit-error rate performance. The error bounds of constellation estimation are derived. Simulation results show that the proposed algorithm can improve the transmission efficiency by at most 50% and 25% compared with the conventional BPSK and QPSK respectively in Rayleigh channel while still maintaining almost the same or even better BER performance as conventional BPSK and QPSK.

Published in:

Communications and Networking in China (CHINACOM), 2011 6th International ICST Conference on

Date of Conference:

17-19 Aug. 2011