Imperial College London
Portrait Picture

ProfessorBrunoClerckx

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Wireless Communications and Signal Processing
 
 
 
//

Contact

 

+44 (0)20 7594 6234b.clerckx Website

 
 
//

Location

 

816Electrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Clerckx:2017:10.1109/TWC.2017.2737009,
author = {Clerckx, B and Dai, M},
doi = {10.1109/TWC.2017.2737009},
journal = {IEEE Transactions on Wireless Communications},
pages = {7025--7038},
title = {Multiuser Millimeter Wave Beamforming Strategieswith Quantized and Statistical CSIT},
url = {http://dx.doi.org/10.1109/TWC.2017.2737009},
volume = {16},
year = {2017}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - To alleviate the high cost of hardware in mmWave systems, hybrid analog/digital precoding is typically employed. In the conventional two-stage feedback scheme, the analog beamformer is determined by beam search and feedback to maximize the desired signal power of each user. The digital precoder is designed based on quantization and feedback of effective channel to mitigate multiuser interference. Alternatively, we propose a one-stage feedback scheme which effectively reduces the complexity of the signalling and feedback procedure. Specifically, the second-order channel statistics are leveraged to design digital precoder for interference mitigation while all feedback overhead is reserved for precise analog beamforming. Under a fixed total feedback constraint, we investigate the conditions under which the one-stage feedback scheme outperforms the conventional twostage counterpart. Moreover, a rate splitting (RS) transmission strategy is introduced to further tackle the multiuser interference and enhance the rate performance. Consider (1) RS precoded by the one-stage feedback scheme and (2) conventional transmission strategy precoded by the two-stage scheme with the same firststage feedback as (1) and also certain amount of extra secondstage feedback. We show that (1) can achieve a sum rate comparable to that of (2). Hence, RS enables remarkable saving in the second-stage training and feedback overhead.
AU  - Clerckx,B
AU  - Dai,M
DO  - 10.1109/TWC.2017.2737009
EP  - 7038
PY  - 2017///
SN  - 1536-1276
SP  - 7025
TI  - Multiuser Millimeter Wave Beamforming Strategieswith Quantized and Statistical CSIT
T2  - IEEE Transactions on Wireless Communications
UR  - http://dx.doi.org/10.1109/TWC.2017.2737009
UR  - http://hdl.handle.net/10044/1/50347
VL  - 16
ER  -
Download