Base Station Selection for Per-cell Precoding
with Limited Feedback in Cooperative Multi-point
Published online: 11 August 2017
Ó Springer Science+Business Media, LLC 2017
Abstract Though per-cell precoding is an efﬁcient coordinated multipoint transmission/
reception transmission mode for frequency-division duplex systems, it has the problems of
channel feedback and computational complexity. Especially, when base station has large
antennas, these problems are worsened. To overcome these drawbacks, we propose a base
station selection precoding that searches an optimal combination of cooperative base stations.
By selecting transmission mode at each base station, the feedback overhead and complexity
can be relieved and user can acquire additional throughput gains. Also, the analytical
approximation of proposed scheme is derived. Simulation results show that the base station
precoding has a higher throughput gains in the large antennas environment than conventional
schemes and the analytical results approximate the numerical results well.
Keywords CoMP system Á Per-cell precoding Á FDD limited feedback
Coordinated multi-point transmission and reception (CoMP) has been considered as one of
the most promising techniques for LTE-A systems [1, 2]. Abundant spatial domain is
provided by cooperating all the adjacent base stations (BS), which can enhance throughput
gains or reduce inter-cell interference, especially for the cell-edge user equipments (UE).
& Chungyong Lee
Department of Electrical and Electronic Engineering, Yonsei University, Seoul, Korea
Advanced Technology Center in Korea, Bell LAB., Nokia, Seoul, Korea
Wireless Pers Commun (2017) 97:5853–5864