• Publications
  • Influence
Dual methods for nonconvex spectrum optimization of multicarrier systems
  • W. Yu, R. Lui
  • Mathematics, Computer Science
  • IEEE Transactions on Communications
  • 17 July 2006
TLDR
We show that the recently proposed optimal spectrum balancing algorithm for digital subscriber lines can be interpreted as a dual algorithm. Expand
  • 1,432
  • 137
  • PDF
Iterative water-filling for Gaussian vector multiple-access channels
TLDR
This paper proposes an efficient numerical algorithm to compute the optimal input distribution that maximizes the sum capacity of a Gaussian multiple-access channel with vector inputs and a vector output. Expand
  • 1,020
  • 99
  • PDF
Distributed multiuser power control for digital subscriber lines
TLDR
This paper considers the multiuser power control problem in a frequency-selective interference channel. Expand
  • 861
  • 95
  • PDF
Multi-Cell MIMO Cooperative Networks: A New Look at Interference
TLDR
This paper presents an overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks. Expand
  • 1,563
  • 90
  • PDF
Hybrid Digital and Analog Beamforming Design for Large-Scale Antenna Arrays
  • F. Sohrabi, W. Yu
  • Computer Science, Mathematics
  • IEEE Journal of Selected Topics in Signal…
  • 22 January 2016
TLDR
We show that hybrid beamforming can achieve the same performance of any fully digital beamforming scheme with much fewer number of RF chains; the required number RF chains only needs to be twice the number of data streams. Expand
  • 635
  • 78
  • PDF
Transmitter Optimization for the Multi-Antenna Downlink With Per-Antenna Power Constraints
  • W. Yu, Tian Lan
  • Mathematics, Computer Science
  • IEEE Transactions on Signal Processing
  • 1 June 2007
TLDR
This paper considers the transmitter optimization problem for a multiuser downlink channel with multiple transmit antennas at the base-station. Expand
  • 721
  • 66
  • PDF
Coordinated beamforming for the multicell multi-antenna wireless system
  • H. Dahrouj, W. Yu
  • Mathematics, Computer Science
  • IEEE Transactions on Wireless Communications
  • 1 May 2010
TLDR
In a conventional wireless cellular system, signal processing is performed on a per-cell basis; out-of-cell interference is treated as background noise. Expand
  • 652
  • 58
Sparse Beamforming and User-Centric Clustering for Downlink Cloud Radio Access Network
TLDR
This paper considers a downlink cloud radio access network (C-RAN) in which all the base-stations (BSs are connected to a central computing cloud via digital backhaul links with finite capacities. Expand
  • 322
  • 50
  • PDF
Fractional Programming for Communication Systems—Part I: Power Control and Beamforming
  • K. Shen, W. Yu
  • Computer Science, Mathematics
  • IEEE Transactions on Signal Processing
  • 27 February 2018
TLDR
Fractional programming (FP) refers to a family of optimization problems that involve ratio term(s). Expand
  • 220
  • 50
  • PDF
Content-Centric Sparse Multicast Beamforming for Cache-Enabled Cloud RAN
  • M. Tao, Erkai Chen, Hao Zhou, W. Yu
  • Computer Science, Mathematics
  • IEEE Transactions on Wireless Communications
  • 22 December 2015
TLDR
This paper presents a content-centric transmission design in a cloud radio access network by incorporating multicasting and caching. Expand
  • 348
  • 49
  • PDF
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