Cooperative communication allows several nodes to cooperatively transmit signals to a particular destination. Using cooperative communication, wireless networks could mitigate severe channel impairments arising from multipath propagation. In this case, the greater benefits are gained by exploiting spatial diversity in the channel. However, cooperative routing strategy in a network with multiple...

Distributed space-time block coding (Dis-STBC) achieves diversity through cooperative transmission among geographically dispersed nodes. In this paper, we present a power-efficient relay-selection strategy for decentralized Dis-STBC in a selective decodeand-forward cooperative network. In particular, for a two-stage network, each decoded node broadcasts a small amount of information with limite...

There are many recent interests on cooperative communication (CC) in wireless networks. Despite the large capacity gain of CC in small wireless networks, CC can result in severe interference in large networks and even degraded throughput. The aim of this chapter is to concurrently exploit multi-radio and multi-channel (MRMC) and CC technique to combat co-channel interference and improve the per...

With files proactively stored at base stations (BSs), mobile edge caching enables direct content delivery without remote file fetching, which can reduce the end-to-end delay while relieving backhaul pressure. To effectively utilize the limited cache size in practice, cooperative caching can be leveraged to exploit caching diversity, by allowing users served by multiple base stations under the e...

This paper proposes an optimal cooperative spectrum sensing scheme, based on the criterion of deflection coefficient maximization of the global decision statistic. Multiple cooperative secondary users serve in the cognitive radio network to provide space diversity for spectrum sensing. After the fusion center acquires the optimal fusion weights, an optimal global threshold setting strategy is u...

Title of Dissertation: RELAY DEPLOYMENT AND SELECTION IN COOPERATIVE WIRELESS NETWORKS Ahmed Salah Ibrahim, Doctor of Philosophy, 2009 Dissertation directed by: Professor K. J. Ray Liu Department of Electrical and Computer Engineering In cooperative communication protocols, multiple terminals can cooperate together forming a virtual antenna array to improve their performance. This thesis contri...

An energy-efficient communication schemes in wireless sensor networks (WSN) is highly desirable where energy consumption is constrained. In this paper, the mathematical model of energy consumption per bit in wireless sensor network using Cooperative MIMO is presented. Cooperative MIMO transmission and reception can simultaneously achieve the energy savings and the delay reduction over some dist...

This chapter reviews fundamental protocol engineering aspects and presents resource allocation approaches for wireless relay networks. Important cooperative diversity protocols and their typical applications in different wireless network environments are first described. Then, performance analysis and QoS provisioning issues for wireless networks using cooperative diversity are discussed. Final...

Multihop network is an approach utilizing distributed wireless stations for relaying. In this system, area size, coverage and total transmit power efficiency can be improved. It is shown by computer simulations that the cooperative relaying scheme provides transmit diversity effect, and can offer much better performance compared with that of non-cooperation case. To confirm this superior perfor...

This paper presents the analysis of cooperative diversity performance over the uplink Rician fading channel. The time division multiple access (TDMA) scheme and the half-duplex mode of transmission are assumed. The network architecture is defined as symmetrical structure. We analyze the bit error rates (BER) of binary phase shift keying (BPSK) for two-user cooperative diversity with decode-and-...