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QoS-Driven Asynchronous Uplink Subchannel Allocation Algorithms for Space-Time OFDM-CDMA Systems in Wireless Networks

Overview In order to support the diverse Quality of Service (QoS) requirements for differentiated data applications in broadband wireless networks, advanced techniques such as Space-Time Coding (STC) and Orthogonal Frequency Division Multiplexing (OFDM) are implemented at the physical layer. However, the employment of such techniques evidently affects the subchannel-allocation algorithms at the Medium Access Control (MAC) layer. This paper proposes the QoS-driven cross-layer subchannel-allocation algorithms for data transmissions over asynchronous uplink space-time OFDM-CDMA systems. The paper mainly focuses on QoS requirements of maximizing the best-effort throughput and proportional bandwidth fairness, while minimizing the upper-bound of scheduling delay.

Further White Paper Details
Publisher	Texas A&M University	File Format	PDF
Date Published	August 2004
Format	White Papers
Topics	Wireless LAN, Quality of Service, Mobile - Wireless Communications

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