Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2011, Vol. 34 ›› Issue (s1): 27-30.doi: 10.13190/jbupt.2011s1.27.206

• Papers • Previous Articles     Next Articles

Embedded SpaceFrequency Block Codes

    

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  • Online:2011-10-28 Published:2011-10-28
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Abstract:

Tradeoff between diversity and rate in space frequency block codes (SFBC) is adopted, and embedded SFBC is proposed. The information is divided into the based stream and the enhanced stream. The based stream is received in bad channel, but the based and enhanced are received simultaneity in good channel. The transmission rate can be improved, and it is ensure that the based information stream is received reliably. Meanwhile, the peak average ratio formulation of our proposed codes is derived in two transmission antennas. Simulations show that the based information of embedded SFBC could have higher diversity order than Alamouti SFBC in lower signal to noise ratio. Compared with the opportunistic space time block codes, the proposed space frequency codes is of lower bit error ratio of system when used 2 transmission antennas under high Doppler shift conditions.

Key words: embedded codes, space frequency block codes, space time block codes

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