基于RLS-MLSE的频率选择性快衰落移动无线电信道自适应均衡

IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record Pub Date : 1991-12-02 DOI:10.1109/GLOCOM.1991.188445

K. Fukawa, H. Suzuki

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引用次数: 30

摘要

提出了一种将递推最小二乘自适应算法与最大似然序列估计(RLS-MLSE)相结合的自适应均衡方案。在频率选择性快衰落移动信道中验证了该方案的性能。RLS- mlse采用并行估计方案，通过Viterbi算法估计信道状态，通过RLS估计信道脉冲响应参数。讨论了一种简化的RLS算法和分集接收方案的扩展。计算机仿真表明，RLS-MLSE适用于900 mhz频段移动无线电系统中40 kb/s的QPSK(正交相移键控)传输，且双支路分集均衡的最大多普勒频率可达160 Hz。

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Adaptive equalization with RLS-MLSE for frequency-selective fast fading mobile radio channels

The authors propose a novel adaptive equalization scheme which is a combination of the recursive least squares adaptive algorithm and maximum likelihood sequence estimation (RLS-MLSE). The performance of the scheme is demonstrated in frequency-selective fast fading mobile radio channels. RLS-MLSE employs a parallel estimation scheme in which the state of the channel is estimated by the Viterbi algorithm and the parameters of the channel impulse response are estimated by RLS. A simplified RLS algorithm and an extension to the diversity reception scheme are discussed. Computer simulations show that RLS-MLSE is suitable for 40-kb/s QPSK (quadrature phase shift keying) transmission in 900-MHz-band mobile radio systems, and that equalization with two-branch diversity operates up to a maximum Doppler frequency of 160 Hz.<>

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IEEE Global Telecommunications Conference GLOBECOM '91: Countdown to the New Millennium. Conference Record

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