Widely-linear minimum-mean-squared error multiple-candidate successive interference cancellation for multiple access interference and jamming suppression in direct-sequence code-division multiple-access systems

In this paper, the authors propose a widely-linear (WL) receiver structure for multiple access interference (MAI) and jamming signal (JS) suppression in direct-sequence code-division multiple-access systems. A vector space projection (VSP) scheme is also considered to cancel the JS before detecting...

Full description

Saved in:
Bibliographic Details
Published in:IET signal processing Vol. 9; no. 1; pp. 73 - 81
Main Authors: Yang, Jianwei, de Lamare, Rodrigo C
Format: Journal Article
Language:English
Published: The Institution of Engineering and Technology 01.02.2015
Subjects:
Algorithms
binary phase shift keying modulation
Cancellation
code division multiple access
consecutive user symbols
direct sequence code division multiple access system
Errors
feedback candidates
Interference
interference suppression
jamming
jamming signal suppression
JS suppression
least mean squares methods
linear minimum mean squared error
MAI suppression
MMSE propagation algorithm
Modulation
Multiple access
multiple access interference
multiple candidate successive interference cancellation
noncircular modulation scheme
phase shift keying
radio receivers
Receivers
SIC MMSE receivers
Signal processing
spread spectrum communication
vector space projection
VSP scheme
widely linear receiver structure
WL signal processing
WL signal processing
least mean squares methods
consecutive user symbols
interference suppression
widely linear receiver structure
MAI suppression
jamming
MMSE propagation algorithm
code division multiple access
spread spectrum communication
JS suppression
radio receivers
direct sequence code division multiple access system
vector space projection
feedback candidates
VSP scheme
phase shift keying
binary phase shift keying modulation
SIC MMSE receivers
multiple access interference
noncircular modulation scheme
jamming signal suppression
multiple candidate successive interference cancellation
linear minimum mean squared error
ISSN:1751-9675, 1751-9683, 1751-9683
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, the authors propose a widely-linear (WL) receiver structure for multiple access interference (MAI) and jamming signal (JS) suppression in direct-sequence code-division multiple-access systems. A vector space projection (VSP) scheme is also considered to cancel the JS before detecting the desired signals. They develop a novel multiple-candidate successive interference cancellation (MC-SIC) scheme which processes two consecutive user symbols at one time to process the unreliable estimates and a number of selected points serve as the feedback candidates for interference cancellation, which is effective for alleviating the effect of error propagation in the successive interference cancellation (SIC) algorithm. WL signal processing is then used to enhance the performance of the receiver in non-circular modulation scheme. By bringing together the techniques mentioned above, a novel interference suppression scheme is proposed which combines the WL MC-SIC minimum-mean-squared error (MMSE) algorithm with the VSP scheme to suppress MAI and JS simultaneously. Simulations for binary phase shift keying modulation scenarios show that the proposed structure achieves a better MAI suppression performance compared with previously reported SIC MMSE receivers at lower complexity and a superior JS suppression performance.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1751-9675
1751-9683
1751-9683
DOI:10.1049/iet-spr.2013.0375