Multi-Rate Resource Allocations for TH-UWB Wireless Communications
作者： Philippe Mary , Inbar Fijalkow , Charly Poulliat
DOI: 10.1109/TWC.2012.102612.120099
关键词:
摘要: In this paper, we are interested in resource allocation strategies for wireless time-hopping ultra-wide band (TH-UWB) communications with multiple rate capabilities between users. Multiple rates achieved by assigning different processing gains, i.e. Nf, to For purpose, the multiple-access interference (MAI) variance accounting multi-rate is needed. It a challenging task due lack of suitable closed-form expression MAI context. We further study problem uplink TH-UWB systems which an optimal search cannot be envisaged exponential complexity induced. Our contribution lies three-fold: i) A new intercode correlation derived, and averaging over codes obtained. ii) The tackled relaxing integer constraint on gains modeled via signomial programming problem. iii) Based this, branch bound (BB) algorithm derived systems. also propose really simple heuristic linear Nf allocation. show that proposed outperforms BB average throughput starvation rate.
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