On the Ergodic Mutual Information of Keyhole MIMO Channels With Finite-Alphabet Inputs

被引：3
|
作者：
Ouyang, Chongjun [1 ]
Bereyhi, Ali [2 ]
Asaad, Saba [2 ]
Mueller, Ralf R. [2 ]
Cheng, Julian [3 ]
Yang, Hongwen [1 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Informat & Commun Engn, Beijing 100876, Peoples R China
[2] Friedrich Alexander Univ Erlangen Nurnberg, Inst Digital Commun, D-91058 Erlangen, Germany
[3] Univ British Columbia, Sch Engn, Kelowna, BC V1V 1V7, Canada
来源：
IEEE COMMUNICATIONS LETTERS | 2023年 / 27卷 / 01期
关键词：
Electromagnetic interference; MIMO communication; Probability density function; Signal to noise ratio; Transmitters; Mutual information; Fading channels; Ergodic mutual information; finite-alphabet inputs; keyhole channel; multiple-input multiple-output; ASYMPTOTICS;
D O I：
10.1109/LCOMM.2022.3211451
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This letter studies the ergodic mutual information (EMI) of keyhole multiple-input multiple-output channels having finite-alphabet input signals. The EMI is first investigated for single-stream transmission considering both cases with and without the channel state information at the transmitter. Then, the derived results are extended to the scenario of multi-stream transmission. Asymptotic analyses are performed in the regime of high signal-to-noise ratio (SNR). The high-SNR EMI is shown to converge to a constant with its rate of convergence determined by the diversity order. On this basis, the influence of the keyhole effect on the EMI is discussed. The analytical results are validated by numerical simulations.
引用
收藏
页码：90 / 94
页数：5
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