Mobile Networks and Applications
Fundamentals of wireless communication
Fundamentals of wireless communication
Fundamentals of WiMAX: Understanding Broadband Wireless Networking (Prentice Hall Communications Engineering and Emerging Technologies Series)
Computationally efficient bandwidth allocation and power control for OFDMA
IEEE Transactions on Wireless Communications
Opportunistic cooperation by dynamic resource allocation
IEEE Transactions on Wireless Communications
Cooperative Communications with Outage-Optimal Opportunistic Relaying
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
Cooperative Relay Broadcast Channels
IEEE Transactions on Information Theory
Multihop Relaying for Broadband Wireless Mesh Networks: From Theory to Practice
IEEE Communications Magazine
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
Resource allocation for QOS-aware OFDMA cellular networks with cooperative relaying
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In order to understand the key merits of multiuser diversity, opportunistic scheduling and spectrum reuse techniques in downlink relay-based cellular networks, this paper analyzes the spectral efficiency performance over a fading multihop broadcast channel (MBC) composed of a base station (BS), a relay station (RS), U far users and V near users in the asymptotic regime of large number of users. Using tools from extreme-value theory, we characterize the average spectral efficiency of the MBC as a function of the number of users and physical channel parameters. Our analysis yields very accurate formulas even for moderately low values of U and V, specified in detail and verified (via Monte Carlo simulations) for the case of Rayleigh fading. Next, we consider a relaybased broadband multi-cellular network in the downlink mode; with special focus on orthogonal frequency-division multipleaccess (OFDMA) resource allocation and investigate the spectral efficiency performance of opportunistic multiuser scheduling and spectrum reuse techniques based on capacity analysis and systemlevel simulations. This empirical study validates our analytical insights and helps to further identify design tradeoffs associated with spectrum reuse, interference management and multiuser diversity techniques in relay-based cellular networks.