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Robust blind multiuser detection based on the worst-case performance optimization of the MMSE receiver
The conventional minimum mean-square error (MMSE) multiuser receiver requires that each particular user transmits a sequence of training symbols known to the receiver and the receiver estimates theExpand
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Decentralized Relay Selection Schemes in Uniformly Distributed Wireless Sensor Networks
We study three relay selection schemes for uniformly distributed wireless sensor networks: 1) optimal selection where the relays that maximize the signal-to-noise ratio (SNR) at the destination areExpand
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Collaborative Null-Steering Beamforming for Uniformly Distributed Wireless Sensor Networks
Null-steering transmit beamformers aim to maximize the received signal power in the direction of the intended receiver while substantially reducing the power impinging on the unintended receiversExpand
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  • Open Access
Asymptotic Capacity and Optimal Precoding in MIMO Multi-Hop Relay Networks
A multihop relaying system is analyzed where data sent by a multi-antenna source is relayed by successive multi-antenna relays until it reaches a multi-antenna destination. Assuming correlated fadingExpand
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  • Open Access
Radio access virtualization: Cell follows user
Virtual radio access (VRA) technology wherein groups of cooperative transmit points (TPs) form virtual TPs (VTPs) to serve user equipments (UEs) continue to be a thriving subject of research inExpand
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Distributed beamforming for wireless sensor networks with random node location
Due to the unsupervised nature of wireless sensor networks (WSNs), intensive communications are required among the selected nodes to reach a consensus and synchronize prior to entering a distributedExpand
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  • Open Access
Asymptotic capacity and optimal precoding strategy of multi-level precode & forward in correlated channels
We analyze a multi-level MIMO relaying system where a multiple-antenna transmitter sends data to a multiple-antenna receiver through several relay levels, also equipped with multiple antennas.Expand
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  • Open Access
Distributed Beamforming for Wireless Sensor Networks With Improved Graph Connectivity and Energy Efficiency
As the nodes in wireless sensor networks (WSNs) are independent units, an intensive communication among them is required to generate a common signal and synchronize before entering a distributedExpand
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A Distributed Amplify-and-Forward Beamforming Technique in Wireless Sensor Networks
We consider L far-field terminals with one source and L-1 interferences that transmit to a wireless sensor network (WSN) with K uniformly distributed relaying nodes. Each relaying node receives aExpand
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Joint Source Power Control and Relay Beamforming in Amplify-and-Forward Cognitive Networks with Multiple Source-Destination Pairs
We consider a multipoint-to-multipoint cognitive network wherein the communications from L sources to their designated destinations are carried out through the use of K relays in a dual-hopExpand
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  • Open Access