Imperial College London
Alternate

DrCongLing

Faculty of Engineering, Department of Electrical and Electronic Engineering

Reader in Coding and Information Theory
 
 
 
//

Contact

 

+44 (0)20 7594 6214c.ling

 
 
//

Location

 

815Electrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Lyu:2019:10.1109/TSP.2018.2877205,
author = {Lyu, S and Ling, C},
doi = {10.1109/TSP.2018.2877205},
journal = {IEEE Transactions on Signal Processing},
pages = {178--193},
title = {Hybrid vector perturbation precoding: the blessing of approximate message passing},
url = {http://dx.doi.org/10.1109/TSP.2018.2877205},
volume = {67},
year = {2019}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Vector perturbation (VP) precoding is a promising technique for multiuser communication systems operating in the downlink. In this work, we introduce a hybrid framework to improve the performance of lattice reduction (LR) aided precoding in VP. First, we perform a simple precoding using zero forcing (ZF) or successive interference cancellation (SIC) based on a reduced lattice basis. Since the signal space after LR-ZF or LR-SIC precoding can be shown to be bounded to a small range, then along with sufficient orthogonality of the lattice basis guaranteed by LR, they collectively pave the way for the subsequent application of an approximate message passing (AMP) algorithm, which further boosts the performance of any suboptimal precoder. Our work shows that the AMP algorithm can be beneficial for a lattice decoding problem whose data symbols lie in integers  and entries of the lattice basis may not be i.i.d. Gaussian. Numerical results confirm that the low-complexity AMP algorithm can improve the symbol error rate performance of LR-aided precoding significantly. Finally, the hybrid scheme is also proven effective when solving the data detection problem of massive MIMO systems without using LR.
AU  - Lyu,S
AU  - Ling,C
DO  - 10.1109/TSP.2018.2877205
EP  - 193
PY  - 2019///
SN  - 1053-587X
SP  - 178
TI  - Hybrid vector perturbation precoding: the blessing of approximate message passing
T2  - IEEE Transactions on Signal Processing
UR  - http://dx.doi.org/10.1109/TSP.2018.2877205
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000451988800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/69716
VL  - 67
ER  -
Download