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Proceedings Paper

Embedded differential space-time coding for wireless broadcast
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Paper Abstract

An embedded differential space-time coding method is proposed for wireless broadcast application in this work. Our previous work investigated embedded space-time codes for layered media broadcast. In such a system, a transmitter sends out multi-layer source signals by encoding different layers with different space-time codes. Then, the receiver can retrieve a different amount of information depending on the number of antennas it has as well as the level of receiving power. The receiving terminals with one antenna can decode only the base layer information with a low complexity while terminals with more antennas can retrieve more layers of information. In this research, we further consider the case when the channel state information (CSI) is unknwon. The differential coding technique is adopted here. Transmitted symbols are encoded as a certain combination of previous symbols so that the receiver can retrieve the information without CSI. We explore the embedded design with differential STC to enable layered media transmission. Differential detection with Kalman filtering is also investigated to help improve performance.

Paper Details

Date Published: 12 November 2002
PDF: 12 pages
Proc. SPIE 4869, Emerging Technologies for Future Generation Wireless Communications, (12 November 2002); doi: 10.1117/12.455452
Show Author Affiliations
Chih-Hung Kuo, Univ. of Southern California (United States)
C.-C. Jay Kuo, Univ. of Southern California (United States)

Published in SPIE Proceedings Vol. 4869:
Emerging Technologies for Future Generation Wireless Communications
Carl R. Nassar, Editor(s)

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