Techniques for System Information Broadcast in Cell-Free Massive MIMO

被引：18

作者：

Karlsson, Marcus ^{[1
]}

Bjornson, Emil ^{[1
]}

Larsson, Erik G. ^{[1
]}

机构：

[1] Linkoping Univ, Dept Elect Engn ISY, S-58183 Linkoping, Sweden

来源：

IEEE TRANSACTIONS ON COMMUNICATIONS | 2019年 / 67卷 / 01期

基金：

瑞典研究理事会;

关键词：

Rayleigh channels; array signal processing; signal detection; MIMO; 5G mobile communication; narrowband; spatial diversity; space-time codes; NETWORKS; CAPACITY; TRANSMISSION; PERFORMANCE; CHANNEL; ENERGY;

D O I：

10.1109/TCOMM.2018.2869797

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We consider transmission of system information in a cell-free massive MIMO system, when the transmitting access points do not have any channel state information and the receiving terminal has to estimate the channel based on downlink pilots. We analyze the system performance in terms of outage rate and coverage probability and use space-time block codes to increase performance. We propose a heuristic method for pilot/data power optimization that can be applied without any channel state information at the access points. We also analyze the problem of grouping the access points, which is needed when the single-antenna access points jointly transmit a space-time block code.

引用

页码：244 / 257

页数：14

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