Dynamic Resource Allocation in Wireless Ad-Hoc Networks based on QS-CDMA

Konferenz: PIMRC 2005 - 16th Annual IEEE International Symposium on Personal Indoor and Mobile Radio Communications
11.09.2005 - 14.09.2005 in Berlin, Germany

Tagungsband: PIMRC 2005

Seiten: 5Sprache: EnglischTyp: PDF

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Feistel, Angela (Heinrich-Hertz-Chair for Mobile Communications, Technical University of Berlin, Einsteinufer 25, 10587 Berlin, Germany)
Sta?czak, S?awomir (Fraunhofer German-Sino Lab for Mobile Communications,Einsteinufer 37, 10587 Berlin, Germany)

We consider a wireless ad-hoc network for data applications using an orthogonal quasi-synchronous CDMA air interface with a linear receiver structure. The throughput performance of such networks is highly affected by a limited number of signature sequences and by individual power constraints on each node. This paper deals with strategies for allocating powers and sequences to nodes. These strategies exploit the relative delay tolerance of data applications and the random packet arrivals to improve the throughput performance. We provide an upper bound of the optimal centralized strategy, and then propose a centralized heuristic algorithm and two distributed approximations of this strategy based on clustering.