R. Heath

Publications918
h-index114
Citations58,569
Highly Influential Citations4,689
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Spatially Sparse Precoding in Millimeter Wave MIMO Systems
TLDR
This paper considers transmit precoding and receiver combining in mmWave systems with large antenna arrays and develops algorithms that accurately approximate optimal unconstrained precoders and combiners such that they can be implemented in low-cost RF hardware. Expand
Channel Estimation and Hybrid Precoding for Millimeter Wave Cellular Systems
TLDR
An adaptive algorithm to estimate the mmWave channel parameters that exploits the poor scattering nature of the channel is developed and a new hybrid analog/digital precoding algorithm is proposed that overcomes the hardware constraints on the analog-only beamforming, and approaches the performance of digital solutions. Expand
Coverage and Rate Analysis for Millimeter-Wave Cellular Networks
  • T. Bai, R. Heath
  • Computer Science, Mathematics
  • IEEE Transactions on Wireless Communications
  • 25 February 2014
TLDR
A general framework to evaluate the coverage and rate performance in mmWave cellular networks is proposed, and the results show that dense mmWave networks can achieve comparable coverage and much higher data rates than conventional UHF cellular systems, despite the presence of blockages. Expand
An Overview of Signal Processing Techniques for Millimeter Wave MIMO Systems
TLDR
This article provides an overview of signal processing challenges in mmWave wireless systems, with an emphasis on those faced by using MIMO communication at higher carrier frequencies. Expand
Limited Feedback Hybrid Precoding for Multi-User Millimeter Wave Systems
TLDR
Analytical and simulation results show that the proposed techniques offer higher sum rates compared with analog-only beamforming solutions, and approach the performance of the unconstrained digital beamforming with relatively small codebooks. Expand
Five disruptive technology directions for 5G
TLDR
Five technologies that could lead to both architectural and component disruptive design changes: device-centric architectures, millimeter wave, massive MIMO, smarter devices, and native support for machine-to-machine communications are described. Expand
Grassmannian beamforming for multiple-input multiple-output wireless systems
TLDR
A quantized maximum signal-to-noise ratio (SNR) beamforming technique is proposed where the receiver only sends the label of the best beamforming vector in a predetermined codebook to the transmitter. Expand
Energy-Efficient Hybrid Analog and Digital Precoding for MmWave MIMO Systems With Large Antenna Arrays
TLDR
This paper proposes a successive interference cancelation (SIC)-based hybrid precoding with near-optimal performance and low complexity, and proposes a low-complexity algorithm to realize SIC-based Hybrid precoding, which can avoid the need for the singular value decomposition and matrix inversion. Expand
GRASSMANNIAN FRAMES WITH APPLICATIONS TO CODING AND COMMUNICATION
TLDR
The application of Grassmannian frames to wireless communication and to multiple description coding is discussed and their connection to unit norm tight frames for frames which are generated by group-like unitary systems is discussed. Expand
Modeling and Analyzing Millimeter Wave Cellular Systems
TLDR
A baseline analytical approach based on stochastic geometry that allows the computation of the statistical distributions of the downlink signal-to-interference-plus-noise ratio (SINR) and also the per link data rate, which depends on the SINR as well as the average load is presented. Expand
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