非对称MIMO-OFDM系统的分组相位旋转空间频率分组编码

A. Nakajima, Kenichiro Tanaka, Akinori Ohashi, Hiroshi Hattori, A. Okazaki, H. Kubo
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引用次数: 0

摘要

为了提高无线通信质量,多输入多输出(MIMO)系统的发射/接收分集技术得到了广泛的研究。在本文中,我们考虑了一种非对称MIMO正交频分复用(MIMO- ofdm)系统在频率选择衰落信道的高速移动情况下。在非对称MIMO-OFDM系统中,传统的循环延迟分集(CDD)、空/空频分组编码(STBC/SFBC)和拟正交STBC/SFBC (QOSTBC/QOSFBC)等方案很难在保持高数据速率和低解调计算复杂度的同时获得高信道质量。因此,在本文中,我们提出了SFBC和分组相位旋转(GPR)的联合使用,并通过计算机仿真评估了平均误码率(BER)性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Space frequency block coding with grouped phase rotation for asymmetric MIMO-OFDM system
To improve quality of wireless communication, transmit/receive diversity techniques in multiple-input multiple-output (MIMO) system have been investigated vigorously. In this paper, we consider an asymmetric MIMO orthogonal frequency division multiplexing (MIMO-OFDM) system in the case of high speed mobility for frequency-selective fading channel. For conventional schemes, e.g., cyclic delay diversity (CDD), space-time/space-frequency block coding (STBC/SFBC), and quasi orthogonal STBC/SFBC (QOSTBC/QOSFBC), it is difficult to obtain high channel quality while keeping high data rate and low computational complexity of demodulation in asymmetric MIMO-OFDM system. Therefore, in this paper, we propose a joint use of SFBC and grouped phase rotation (GPR), and evaluate the average bit error rate (BER) performances by computer simulation.
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