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Performance analysis of the MB-OFDM ultra-wide band communication system with space-time block coding and antenna selection

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2 Author(s)
Yan Zheng ; Dept. of Electron. & Telecommun. Eng., North China Electr. Power Univ., Baoding ; Yu Ping

The emerging ultra wideband (UWB) system offers a great potential for the design of high speed short-range wireless communications. In order to obtain the higher data rates and high capacity, one possible solution is to exploit both spatial and multipath diversities via the use of multiple-input multiple-output (MIMO) and proper coding techniques. The major problems of such systems are high cost and complexity due to more than one radio frequency (RF) chains at both end links. An effective technique to reduce this overhead is to allow the transmitter and/or the receiver to select an optimum antenna subset according to some optimization criterion. In this paper .based on traditional MB-OFDM ultra-wide band physics level structure, we analyze coded multiple-input/multiple output (MIMO) systems with antenna selection at the transmitter side. Proposed an optimum selection criterion to minimize the bit error ratio (BER) and Improved the algorithm to reduce the computation quantity when a channel adapted space-time block coding (STBC) are used. The simulation result indicated that, the STBC-MB-OFDM system may obtain the better diversity gain under the low signal to noise ratio, and the system with antenna selection is reduced the bit error ratio (BER) and complexity in the revision S-V channel.

Published in:

Internet, 2007. ICI 2007. 3rd IEEE/IFIP International Conference in Central Asia on

Date of Conference:

26-28 Sept. 2007