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In future wireless communication networks, layered modulation is a promising technique to provide reliable and efficient broadcast service for users with diversified wireless fading channel. However, there is a great challenge to effectively determine the modulation parameters in applications. To solve this problem, a Modulation Solution Selection (LMSS) algorithm is proposed in this work. Firstly,...
Resource allocation problem in cognitive radio networks (CRN) is one of the key issues to improve the efficiency of spectrum utilization. Most of previous work on resource allocation mainly concentrates on the secondary users (SUs) with only one type of service requirement, without considering the scenario with heterogenous services requirement. In this paper, we study the dynamic channel and power...
Due to the heterogeneity and versatility of emerging services and applications in wireless networks, it has been a great challenge on improving the network utility by taking advantage of the spatial and temporal diversity of radio resource consumption. This paper is committed to solving this problem by introducing a service-aware spectrum sharing algorithm (SSA) in a joint radio resource management...
Cooperative communication is an emerging and effective technology which can overcome the limitation and improve overall system performance of wireless networks. As important design parameters, relay selection, power and bandwidth allocation have been investigated respectively in previous literature. However, most of the existing schemes mainly consider single-relay selection, which may result in imbalance...
In cognitive radio (CR) networks, the end-to-end transmission-control protocol (TCP) performance experienced by secondary users is a very important factor that evaluates the secondary user perceived quality of service (QoS). Most previous works in CR networks ignore the TCP performance. In this paper, we take a cross-layer design approach to jointly consider the spectrum sensing, access decision,...
Aiming to eliminate the mismatch between structured peer-to-peer (P2P) network's logical topology and physical topology, which exists in these classic wired P2P protocols, the representative P2P protocol-Chord which is hardly suitable for wireless network is modified, and an approach of getting optimal node identifier (ID) to realize topology awareness is proposed by exploiting nodes' relative location...
In order to match logical topology to physical topology in P2P wireless network, a new protocol based on chord is proposed, in which a node can get a optimal node identifler(ID) to realize topology awareness by exploiting nodes' relative location information, which is reflected on the energy strength of received signal and the distribution density of P2P member. Simulation results show that the wireless...
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