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- Publications
- Influence

Robust blind multiuser detection based on the worst-case performance optimization of the MMSE receiver

- K. Zarifi, S. Shahbazpanahi, A. Gershman, Z. Luo
- Mathematics, Computer Science
- IEEE Transactions on Signal Processing
- 2005

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 the… Expand

Decentralized Relay Selection Schemes in Uniformly Distributed Wireless Sensor Networks

- Farrokh Etezadi, K. Zarifi, A. Ghrayeb, S. Affes
- Computer Science, Mathematics
- IEEE Transactions on Wireless Communications
- 6 January 2012

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 are… Expand

Collaborative Null-Steering Beamforming for Uniformly Distributed Wireless Sensor Networks

- K. Zarifi, S. Affes, A. Ghrayeb
- Mathematics, Computer Science
- IEEE Transactions on Signal Processing
- 1 March 2010

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 receivers… Expand

Asymptotic Capacity and Optimal Precoding in MIMO Multi-Hop Relay Networks

- N. Fawaz, K. Zarifi, M. Debbah, D. Gesbert
- Mathematics, Computer Science
- IEEE Transactions on Information Theory
- 29 May 2009

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 fading… Expand

Radio access virtualization: Cell follows user

- K. Zarifi, Hadi Baligh, Jianglei Ma, Mohamed Salem, A. Maaref
- Computer Science
- IEEE 25th Annual International Symposium on…
- 1 September 2014

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 in… Expand

Distributed beamforming for wireless sensor networks with random node location

- K. Zarifi, S. Affes, A. Ghrayeb
- Computer Science
- IEEE International Conference on Acoustics…
- 19 April 2009

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 distributed… Expand

Asymptotic capacity and optimal precoding strategy of multi-level precode & forward in correlated channels

- N. Fawaz, K. Zarifi, M. Debbah, D. Gesbert
- Computer Science, Mathematics
- IEEE Information Theory Workshop
- 7 March 2008

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

Distributed Beamforming for Wireless Sensor Networks With Improved Graph Connectivity and Energy Efficiency

- K. Zarifi, A. Ghrayeb, S. Affes
- Mathematics, Computer Science
- IEEE Transactions on Signal Processing
- 1 March 2010

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 distributed… Expand

A Distributed Amplify-and-Forward Beamforming Technique in Wireless Sensor Networks

- K. Zarifi, S. Zaidi, S. Affes, A. Ghrayeb
- Computer Science, Mathematics
- IEEE Transactions on Signal Processing
- 1 August 2011

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 a… Expand

Joint Source Power Control and Relay Beamforming in Amplify-and-Forward Cognitive Networks with Multiple Source-Destination Pairs

- K. Zarifi, S. Affes, A. Ghrayeb
- Computer Science
- IEEE International Conference on Communications…
- 5 June 2011

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-hop… Expand