NDLI: A Multistage Hybrid Constant Modulus Array With Constrained Adaptation for Correlated Sources

Content Provider	IEEE Xplore Digital Library
Author	Venkataraman, V. Shynk, J.J.
Copyright Year	1991
Abstract	The multistage constant modulus (CM) array was previously proposed for capturing multiple received signals in a cochannel signal environment. It consists of a cascade of individual CM array stages combined with adaptive signal cancelers that remove the various signals captured across the stages. However, when the received signals are mutually correlated, the signals captured by the CM array stages are not completely canceled, and previous parallel extensions of the system do not guarantee that different signals will be captured across the stages. In this paper, we present a hybrid implementation of the multistage CM array for separating correlated signals where the canceler weights in the cascade structure provide estimates of the direction vectors of the captured signals. These estimates are then used in a parallel implementation of the linearly constrained CM (LCCM) array leading to the hybrid structure. Since the direction vectors are obtained directly from the canceler weights, the hybrid implementation does not require prior knowledge of the array response matrix and is independent of the type of antennas used in the receiver. The effect of a bias in the direction vector estimates for closely-spaced signals is analyzed, and the steady-state performance of the hybrid structure is compared to that of a conventional constrained implementation for correlated sources. Computer simulations for example cochannel scenarios are provided to illustrate various properties of the system. Mean-square-error (MSE) learning curves indicate that the proposed hybrid LCCM algorithm converges faster and has lower MSE than previous implementations
Sponsorship	IEEE Signal Processing Society
Starting Page	2509
Ending Page	2519
Page Count	11
File Size	586689
File Format	PDF
ISSN	1053587X
Volume Number	55
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Adaptive arrays Signal processing algorithms Interference constraints Linear antenna arrays Antenna arrays Array signal processing Signal processing Directive antennas Receiving antennas Signal analysis interference suppression Adaptive array signal processing blind signal separation constrained adaptive beamforming
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Constant Modulus Algorithm in intelligent antenna

Differential MMSE: new adaptive algorithms for equalization, interference suppression, and beamforming

Robust auxiliary vector filtering algorithm based on constrained constant modulus design for adaptive beamforming

Initialising constant modulus algorithm for smart antenna applications

Hybrid constant modulus array

Adaptive beamforming using RNS arithmetic

Optimum transmission beamforming on phase-only antenna arrays

Implementation and Experimental Verification of Hybrid Smart-Antenna Beamforming Algorithm

Adaptive beamforming with 16 element linear array using MaxSIR and MMSE algorithms

A Multistage Hybrid Constant Modulus Array With Constrained Adaptation for Correlated Sources

Similar Documents

Constant Modulus Algorithm in intelligent antenna

Differential MMSE: new adaptive algorithms for equalization, interference suppression, and beamforming

Robust auxiliary vector filtering algorithm based on constrained constant modulus design for adaptive beamforming

Initialising constant modulus algorithm for smart antenna applications

Hybrid constant modulus array

Adaptive beamforming using RNS arithmetic

Optimum transmission beamforming on phase-only antenna arrays

Implementation and Experimental Verification of Hybrid Smart-Antenna Beamforming Algorithm

Adaptive beamforming with 16 element linear array using MaxSIR and MMSE algorithms

A Multistage Hybrid Constant Modulus Array With Constrained Adaptation for Correlated Sources