Cross-layer radio resource allocation in packet CDMA wireless mobile networks with LMMSE receivers

TitleCross-layer radio resource allocation in packet CDMA wireless mobile networks with LMMSE receivers
Publication TypeJournal Article
Year of Publication2005
AuthorsYu, F., and V. Krishnamurthy
Secondary AuthorsBoutaba, R., K. Almeroth, R. Puigjaner, S. Shen, and J. P. Black
JournalNetworking 2005: Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; Mobile and Wireless Communications Systems
Volume3462
Pagination1243–1254
ISSN0302-9743
Abstract

Most of previous study of radio resource allocation in traditional wireless networks concentrates on network layer connection blocking probability QoS. In this paper, we show that physical layer techniques and QoS have significant impact on network layer QoS. We define a novel concept of cross-layer effective bandwidth and use this to measure the unified radio resource usage taking into account both physical layer linear minimum-mean square error (LMMSE) receivers and varying statistical characteristics of the packet traffic in code devision multiple access (CDMA) networks. We demonstrate the similarity between traditional circuit-switched networks and packet CDMA networks, which enables rich theories developed in traditional wireless networks to be used in packet CDMA networks. Moreover, since both physical layer signal-to-interference ratio (SIR) QoS and network layer connection blocking probability QoS are considered simultaneously, we can explore the tradeoff between physical layer QoS and network layer QoS in packet CDMA networks.

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