Space-Time Encoded MISO Broadcast Channel With Outdated CSIT: An Error Rate and Diversity Performance Analysis
File(s)
Accepted version
Author(s)
Clerckx, B
Gesbert, D
Type
Journal Article
Abstract
Studies of the MISO Broadcast Channel (BC) with delayed Channel State Information at the Transmitter (CSIT) have so far focused on the sum-rate and Degrees-of-Freedom (DoF) region analysis. In this paper, we investigate for the first time, the error rate performance at finite SNR and the diversity-multiplexing tradeoff (DMT) at infinite SNR of a space-time encoded transmission over a two-user MISO BC with delayed CSIT. We consider the so-called MAT protocol obtained by Maddah-Ali and Tse, which was shown to provide 33% DoF enhancement over TDMA. While the asymptotic DMT analysis shows that MAT is always preferable to TDMA, the Pairwise Error Probability analysis at finite SNR shows that MAT is in fact not always a better alternative to TDMA. Benefits can be obtained over TDMA only at a very high rate or once concatenated with a full-rate full-diversity space-time code. The analysis is also extended to spatially correlated channels, and the influence of transmit correlation matrices and user pairing strategies on the performance are discussed. Relying on statistical CSIT, signal constellations are further optimized to improve the error rate performance of MAT and make it insensitive to user orthogonality. Finally, other transmission strategies relying on delayed CSIT are discussed.
Date Issued
2015-03-05
Date Acceptance
2015-03-05
Citation
IEEE Transactions on Communications, 2015, 63 (5), pp.1661-1675
ISSN
1558-0857
Publisher
IEEE
Start Page
1661
End Page
1675
Journal / Book Title
IEEE Transactions on Communications
Volume
63
Issue
5
Copyright Statement
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor
Commission of the European Communities
Grant Number
318489 HARP
Subjects
Science & Technology
Technology
Engineering, Electrical & Electronic
Telecommunications
Engineering
MISO Broadcast Channel
delayed CSIT
diversity-multiplexing tradeoff
performance analysis
multiuser communications
space-time coding
user pairing
RICEAN MIMO CHANNELS
DELAYED CSIT
FINITE-SNR
CODES
FREEDOM
DESIGN
0906 Electrical And Electronic Engineering
1005 Communications Technologies
Publication Status
Published