Open AccessAsymptotic analysis of two‐layer D‐BLAST with group‐zero forcing detection in general channels
Author(s) -
Sundaramurthi Rajarajan,
Chaturvedi Sanjay Kumar
Publication year - 2017
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2017.0418
Subject(s) - fading , multiplexing , rayleigh fading , asymptotic analysis , computer science , diversity gain , transmission (telecommunications) , decoding methods , channel (broadcasting) , algorithm , gaussian , interference (communication) , topology (electrical circuits) , telecommunications , mathematics , electronic engineering , physics , engineering , combinatorics , mathematical analysis , quantum mechanics
In this study, the authors perform the asymptotic analysis of two‐layer D‐BLAST transmission scheme with group detection receiver under broad class of fading channels. The asymptotic analysis includes both diversity‐multiplexing trade‐off (DMT) and throughput‐reliability trade‐off (TRT) analyses. The D‐BLAST considered here is a multi‐layered space–time transmission scheme, wherein each diagonal of code‐word forms a group. On the other hand, group detection considered detects symbols by nulling out interference from other groups and performs maximum‐likelihood decoding on the chosen group. The reason for choosing this scheme is that the first inflexion of DMT of this system ceases at multiplexing gain ≪1, i.e. second inflexion began at multiplexing gain <1 under Gaussian fading scenario. The results of DMT indicate that the system behaves differently in different fading channel constraints when multiplexing gain ≪1. The results of the TRT analysis show that the system performs different in different fading channels in the zeroth operating region.