Adaptive multichannel modulation for variable QoS multimedia applications in survivable mobile wireless communications

John E. Kleider; Glen P. Abousleman

doi:10.1117/12.438295

28 August 2001 Adaptive multichannel modulation for variable QoS multimedia applications in survivable mobile wireless communications

John E. Kleider, Glen P. Abousleman

Author Affiliations +

Proceedings Volume 4395, Digital Wireless Communication III; (2001) https://doi.org/10.1117/12.438295
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

In this paper, we present an optimal, low-complexity method of transmitting digitally compressed imagery through interference-dominated and frequency-selective fading channels. The proposed method combines a wavelet-based image coder that employs phase scrambling and variable quality-of-service (VQoS) channel-optimized trellis-coded quantization (COTCQ), and VQoS multicarrier (MC) power allocation across the channel. Optimal image quality is achieved through a joint iterative process between the image coder and MC allocation algorithm. Using our VQoS allocation method, we show that the image quality can be improved significantly, as compared to an approach that uses a fixed QoS allocation across the channel. Further, this improvement extends to a variety of channels, including those that exhibit jamming interference and frequency-selective fading. The method is also shown to be computationally efficient.

Citation Download Citation

John E. Kleider and Glen P. Abousleman "Adaptive multichannel modulation for variable QoS multimedia applications in survivable mobile wireless communications", Proc. SPIE 4395, Digital Wireless Communication III, (28 August 2001); https://doi.org/10.1117/12.438295

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