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Massive MIMO linear precoding: a survey

journal contribution
posted on 2018-12-01, 00:00 authored by Nusrat Fatema, G Hua, Yong XiangYong Xiang, D Peng, Iynkaran NatgunanathanIynkaran Natgunanathan
IEEE Recently, massive multiple-input multiple-output (MIMO) system has attracted tremendous research interests in wireless communications. Among various performance aspects and design problems regarding massive MIMO, precoding at the base station (BS) is one of the most important function components to ensure reliable downlink transmission. This paper provides a survey of linear precoding techniques for downlink transmission under both single-cell (SC) and multicell (MC) scenarios. In an SC scenario, a series of classical precoding techniques are reviewed and compared. In an MC scenario, massive MIMO suffers from pilot contamination problems, where orthogonal pilot sequences have to be reused among cells, leading to estimation errors of channel state information at the transmitter. Precoding techniques with and without the cooperation among BSs are reviewed and the cooperative precoding techniques are further divided into partial and full cooperations. To the best of our knowledge, this is the first work that comprehensively surveys all the existing linear precoding techniques. The comprehensive review reveals current challenges in designing the precoders, where technical merits are usually bounded by practical implementation issues. We show that a viable precoding technique for massive MIMO systems is still unknown to date, and suggest several research potentials that are worthy of future research efforts.

History

Journal

IEEE systems journal

Volume

12

Issue

4

Pagination

3920 - 3931

Publisher

IEEE

Location

Piscataway, N.J.

ISSN

1932-8184

eISSN

1937-9234

Language

Eng.

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2017, IEEE