NDLI: Partially blind adaptive MMSE interference rejection in asynchronous DS/CDMA networks over frequency-selective fading channels

Content Provider	IEEE Xplore Digital Library
Author	Buzzi, S. Lops, M. Tulino, A.M.
Copyright Year	1972
Abstract	In this work, the problem of joint suppression of multiple-access and narrow-band interference (NBI) for an asynchronous direct-sequence code-division multiple-access (CDMA) system operating on a frequency-selective fading channel is addressed. The receiver structure we consider can be deemed as a two-stage one: the first stage consists of a bank of minimum mean-square-error (MMSE) filters, each keyed to a given replica of the useful signal, and aimed at suppressing the overall interference; the second stage, assuming knowledge of the fading channel coefficients realizations, combines the MMSE filters outputs according to a maximal-ratio combining rule. Due to the presence of the NBI, the resulting structure is in general time-varying, and becomes periodically time-varying if the NBI bit-rate has a rational ratio to that of the CDMA system. Moreover, enlarging the observation window beyond the signaling interval and oversampling the signal space may yield a noticeable performance improvement. For the relevant case that the said ratio is rational, a new cyclic blind recursive least squares (RLS)-based algorithm is introduced, capable of tracking the periodically time-varying receiver structure, and allowing adaptive interference cancellation with a moderate complexity increase. We also come up with a closed-form expression for the conditional bit-error rate (BER), which is useful both to evaluate semi-analytical methods to assess the unconditional BER and to derive bounds on the system near-far resistance. The results indicate that the receiver achieves very satisfactory performance in comparison to previously known structures. Computer simulations also demonstrate that the cyclic blind RLS algorithm exhibits quite fast convergence dynamics.
Starting Page	94
Ending Page	108
Page Count	15
File Size	383419
File Format	PDF
ISSN	00906778
Volume Number	49
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Multiaccess communication Bit error rate Interference suppression Channel bank filters Time varying systems Narrowband Multiple access interference Frequency-selective fading channels Diversity reception Least squares methods
Content Type	Text
Resource Type	Article
Subject	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

Time-varying narrow-band interference rejection in asynchronous multiuser DS/CDMA systems over frequency-selective fading channels

Differential MMSE: a framework for robust adaptive interference suppression for DS-CDMA over fading channels

MMSE multiuser detection for array multicarrier DS-CDMA in fading channels

Coding for a coherent DS-CDMA system employing an MMSE receiver in a Rayleigh fading channel

Performance of coded DS-CDMA with pilot-assisted channel estimation and linear interference suppression

Narrow-band interference rejection in DS/CDMA systems using adaptive (QRD-LSL)-based nonlinear ACM interpolators

Performance analysis of MMSE receivers for DS-CDMA in frequency-selective fading channels

Successive Interference Cancelers for Multimedia Multicode DS-CDMA Systems Over Frequency-Selective Fading Channels

Reduced-rank multistage receivers for DS-CDMA in frequency-selective fading channels

Partially blind adaptive MMSE interference rejection in asynchronous DS/CDMA networks over frequency-selective fading channels

Similar Documents

Time-varying narrow-band interference rejection in asynchronous multiuser DS/CDMA systems over frequency-selective fading channels

Differential MMSE: a framework for robust adaptive interference suppression for DS-CDMA over fading channels

MMSE multiuser detection for array multicarrier DS-CDMA in fading channels

Coding for a coherent DS-CDMA system employing an MMSE receiver in a Rayleigh fading channel

Performance of coded DS-CDMA with pilot-assisted channel estimation and linear interference suppression

Narrow-band interference rejection in DS/CDMA systems using adaptive (QRD-LSL)-based nonlinear ACM interpolators

Performance analysis of MMSE receivers for DS-CDMA in frequency-selective fading channels

Successive Interference Cancelers for Multimedia Multicode DS-CDMA Systems Over Frequency-Selective Fading Channels

Reduced-rank multistage receivers for DS-CDMA in frequency-selective fading channels

Partially blind adaptive MMSE interference rejection in asynchronous DS/CDMA networks over frequency-selective fading channels