NDLI: Simple unequal error protection mechanism for multimedia traffic using the Alamouti structure with hierarchical modulation and signal space diversity

Content Provider	IET Digital Library
Author	Quazi, Tahmid Xu, Hongjun
Abstract	Conventional hierarchical modulation (HM) only provides two levels of unequal error protection (UEP) for multimedia traffic transmission. An HM-based scheme is proposed that provides multiple levels of UEP by exploiting the structure of the Alamouti scheme. A typical Alamouti scheme operates based on the assumptions that the modulation scheme used for the transmission at each antenna is the same and that the power in each antenna is equal. In the proposed system, these two operating assumptions are relaxed, in that the modulation schemes as well as the transmission powers for the two antennas are varied in order to propose a multiple level UEP mechanism for multimedia traffic. The concept is applied to a recently proposed system which uses the Alamouti space–time block code (STBC) structure with HM and signal space diversity (SSD), and it is shown via theoretical and simulation results how the simple UEP mechanism can accommodate the simultaneous transmission of multiple classes of multimedia traffic.
Starting Page	3128
Ending Page	3135
Page Count	8
ISSN	17518628
Volume Number	8
e-ISSN	17518636
Issue Number	Issue 17, Nov (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/8/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2014.0350
Journal	IET Communications
Publisher Date	2014-09-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Alamouti Space-time Block Code Structure Antenna Code Diversity Reception Hierarchical Modulation Scheme HM-based Scheme Modulation Multimedia Communication Multimedia Traffic Transmission Multiple Level UEP Mechanism Radio Link And Equipment Signal Processing Signal Processing And Detection Signal Space Diversity Single Antenna Space-time Block Code SSD STBC Telecommunication Traffic Transmission Powers Unequal Error Protection Mechanism
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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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
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