December 2016
Intermediate to advanced
372 pages
12h 13m
English
Content preview from mmWave Massive MIMO
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Chapter 7
Channel feedback for mmWave massive MIMO
P.-H. Kuo*; B. Su†; C.-P. Yen* * Industrial Technology Research Institute (ITRI), Hsinchu, Taiwan† National Taiwan University, Taipei, Taiwan
Abstract
Accessibility to instantaneous channel state information (CSI) is crucial for a base station equipped with a massive multiple-input multiple-output (MIMO) feature to optimize its downlink transmission performance via precoding. For cellular systems operating in frequency division duplex (FDD) mode, CSI feedback from the users is usually required, which could be challenging in a massive MIMO setting. This chapter discusses two different approaches of CSI acquisition for massive MIMO in FDD, as well as a downlink precoding method that does ...
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