NDLI: Differential Modulation With Threshold-Based Decision Combining for Cooperative Communications

Content Provider	IEEE Xplore Digital Library
Author	Thanongsak Himsoon Siriwongpairat, W.P. Weifeng Su Liu, K.J.R.
Copyright Year	1991
Abstract	Differential modulation is widely known as a practical alternative that provides a good tradeoff between receiver complexity and performance. However, the available differential schemes for wireless relay networks require perfect synchronization and/or provide limited transmission rates. This paper proposes a threshold-based differential decode-and-forward cooperative scheme that not only alleviates the problems of synchronization and rate limitation, but also efficiently exploits the cooperative relay channels via the use of a predetermined decision threshold. In the proposed scheme, the source information is forwarded by the relay only if it is correctly decoded. The properly designed threshold enables the destination to decide whether the received signal from the relay contains information such that the received signals from the source and the relay can be efficiently combined and jointly decoded. Bit error rate (BER) performance analysis of the proposed scheme is analyzed in the case of differential M-ary PSK signals. The analysis focuses on the case when the relay is able to judge whether each decoded symbol is corrected or not. The obtained BER performance in this case serves as a performance benchmark, and the proposed differential decode-and-forward scheme can achieve it in an ideal situation that the error propagation at the relay can be negligible. A tight BER approximation is first derived, and then BER upper bound and lower bound are determined. Based on the tight BER approximation, joint optimum decision threshold and power allocation are numerically evaluated. Both analytical and simulation results reveal that the decision threshold and the power allocation depend on qualities of the communication channels. Interestingly, when the link quality between relay and destination is very good, the effect of the threshold dominates the effect of the power allocation at high signal-to-noise ratio. Extensive simulation results are provided to validate the merit of the proposed scheme and confirm the theoretical analysis.
Sponsorship	IEEE Signal Processing Society
Starting Page	3905
Ending Page	3923
Page Count	19
File Size	1544188
File Format	PDF
ISSN	1053587X
Volume Number	55
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Bit error rate Decoding Performance analysis Analytical models Signal design Signal analysis Phase shift keying Upper bound Communication channels wireless networks Bit error rate (BER) cooperative diversity decode-and-forward protocol differential modulation performance analysis virtual multiple-input multiple-output (MIMO)
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

Differential Modulations for Multinode Cooperative Communications

PL Decoding in Double Differential Modulation Based Decode-and-Forward Cooperative System

Differential transmission for amplify-and-forward Cooperative communications

Performance Analysis of Space-Shift Keying in Decode-and-Forward Multihop MIMO Networks

Exact BER Performance Analysis of Link Adaptive Relaying with Noncoherent BFSK Modulation

Average BER analysis for binary signallings in decode-and-forward dissimilar cooperative diversity networks

ML performance analysis of the decode-and-forward protocol in cooperative diversity networks

Error analysis of the decode and forward protocol with selection combining

Selection Beamforming and Combining in Decode-and-Forward MIMO Relay Networks

Differential Modulation With Threshold-Based Decision Combining for Cooperative Communications

Similar Documents

Differential Modulations for Multinode Cooperative Communications

PL Decoding in Double Differential Modulation Based Decode-and-Forward Cooperative System

Differential transmission for amplify-and-forward Cooperative communications

Performance Analysis of Space-Shift Keying in Decode-and-Forward Multihop MIMO Networks

Exact BER Performance Analysis of Link Adaptive Relaying with Noncoherent BFSK Modulation

Average BER analysis for binary signallings in decode-and-forward dissimilar cooperative diversity networks

ML performance analysis of the decode-and-forward protocol in cooperative diversity networks

Error analysis of the decode and forward protocol with selection combining

Selection Beamforming and Combining in Decode-and-Forward MIMO Relay Networks

Differential Modulation With Threshold-Based Decision Combining for Cooperative Communications