DocumentCode
53453
Title
Constant-Envelope Multi-User Precoding for Frequency-Selective Massive MIMO Systems
Author
Mohammed, Saif Khan ; Larsson, Erik G.
Author_Institution
Dept. of Electr. Eng., Indian Inst. of Technol. (I.I.T.), New Delhi, India
Volume
2
Issue
5
fYear
2013
fDate
Oct-13
Firstpage
547
Lastpage
550
Abstract
We consider downlink precoding in a frequency-selective multi-user Massive MIMO system with highly efficient but non-linear power amplifiers at the base station (BS). A low-complexity precoding algorithm is proposed, which generates constant-envelope (CE) signals at each BS antenna. To achieve a desired per-user information rate, the extra total transmit power required under the per-antenna CE constraint when compared to the commonly used less stringent total average transmit power constraint, is small.
Keywords
MIMO communication; antenna arrays; power amplifiers; BS antenna; constant-envelope multiuser precoding; downlink precoding; frequency-selective massive MIMO systems; low-complexity precoding algorithm; Downlink; MIMO; Optimization; Transmitting antennas; Vectors; Wireless communication; Massive MIMO; per-antenna constant-envelope;
fLanguage
English
Journal_Title
Wireless Communications Letters, IEEE
Publisher
ieee
ISSN
2162-2337
Type
jour
DOI
10.1109/WCL.2013.071713.130328
Filename
6565529
Link To Document