X信道中一种新的空时编码传输方案

doi:10.3969/j.issn.1001-2400.2014.04.021

Abstract

Abstract:

A new space-time coded transmission scheme is proposed for the X channel with four antennas at each user who employs the rate-2 space-time block code. Each codeword is pre-coded, and then the addition and subtraction combinations of each codeword after pre-coding are transmitted separately. The number of interferential coding matrices is reduced through addition and subtraction operations of the received signals, and then the multi-user interference is eliminated by proper pre-coding at the transmitters and linear processing at the receivers. Compared with the existing scheme, the proposed scheme not only greatly reduces the feedback amount, but also significantly improves the system reliability.

Key words: X channel, space-time block code, pre-coding, multi-user interference, feedback amount

TIAN Xinji;LU Jing. New space-time coded transmission scheme for the X channel[J].J4, 2014, 41(4): 116-122.

References

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New space-time coded transmission scheme for the X channel

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