Title
Decentralized Joint Precoding for WSRMax with Pilot Aided Beamformer Estimation.
Abstract
Downlink weighted sum rate maximizing beam-former design is considered for joint processing (JP) coordinated multi-point (CoMP) transmission. Global channel state information exchange, required by the centralized JP CoMP processing, is in many scenarios impractical due to the backhaul latency and capacity requirements. Low overhead decentralized processing enables JP even with limited backhaul capacity. The proposed best response (BR) design also takes into account the possibly non-orthogonal pilot design and noisy pilot estimation. By allowing spatially overlapping pilot sequences, the transceiver processing requires only the channel state information of locally served users. This enables more flexible pilot design and makes the proposed approach realizable in practical time correlated and noisy channel conditions. Furthermore, the proposed BR algorithm provides low signaling overhead for systems with limited backhaul capacity. Robustness for fading channel conditions and limited pilot resources is shown by numerical examples.
Year
Venue
Field
2017
IEEE Global Communications Conference
Transceiver,Backhaul (telecommunications),Computer science,Fading,Communication channel,Real-time computing,Robustness (computer science),Precoding,Channel state information,Telecommunications link
DocType
ISSN
Citations 
Conference
2334-0983
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jarkko Kaleva16514.27
Antti Tölli243259.89
Markku J. Juntti31065127.57
Randall A. Berry4106696.64
Michael L. Honig52971411.29