Journal ArticleDOI
Downlink MMSE Transceiver Optimization for Multiuser MIMO Systems: Duality and Sum-MSE Minimization
TLDR
This work addresses the problem of minimum mean square error (MMSE) transceiver design for point-to-multipoint transmission in multiuser multiple-input-multiple-output (MIMO) systems and proposes two globally optimum algorithms based on convex optimization.Abstract:
We address the problem of minimum mean square error (MMSE) transceiver design for point-to-multipoint transmission in multiuser multiple-input-multiple-output (MIMO) systems. We focus on the problem of minimizing the downlink sum-MSE under a sum power constraint. It is shown that this problem can be solved efficiently by exploiting a duality between the downlink and uplink MSE feasible regions. We propose two different optimization frameworks for downlink MMSE transceiver design. The first one solves an equivalent uplink problem, then the result is transferred to the original downlink problem. Duality ensures that any uplink MMSE scheme, e.g., linear MMSE reception or MMSE-decision feedback equalization (DFE), has a downlink counterpart. We propose two globally optimum algorithms based on convex optimization. The basic idea of the second framework is to perform optimization in an alternating manner by switching between the virtual uplink and downlink channels. This strategy exploits that the same MSE can be achieved in both links for a given choice of transmit and receive filters. This iteration is proven to be convergent.read more
Citations
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Journal ArticleDOI
Zero-Forcing Precoding and Generalized Inverses
TL;DR: This work begins with the standard design under the assumption of a total power constraint and proves that precoders based on the pseudo-inverse are optimal among the generalized inverses in this setting, and examines individual per-antenna power constraints.
Journal ArticleDOI
Quantized Precoding for Massive MU-MIMO
TL;DR: In this paper, the authors investigated the performance of linear precoders, such as maximal-ratio transmission and zero-forcing, subject to coarse quantization and derived a closed-form approximation on the rate achievable under such quantization.
Journal ArticleDOI
Pilot Reuse for Massive MIMO Transmission over Spatially Correlated Rayleigh Fading Channels
TL;DR: Simulation results show that the proposed pilot reuse in single cell for massive multiuser multiple-input multiple-output (MIMO) transmission to reduce the pilot overhead provides significant performance gains over the conventional orthogonal training scheme in terms of net spectral efficiency.
Journal ArticleDOI
Pilot Reuse for Massive MIMO Transmission over Spatially Correlated Rayleigh Fading Channels
TL;DR: In this paper, the authors proposed a pilot reuse (PR) in single cell for massive multiuser multiple-input multiple-output (MIMO) transmission to reduce the pilot overhead.
Journal ArticleDOI
MSE-Based Transceiver Designs for the MIMO Interference Channel
TL;DR: This paper proposes novel transceiver schemes for the MIMO interference channel based on the mean square error (MSE) criterion and shows that the joint design of transmit precoding matrices and receiving filter matrices with both objectives can be realized through efficient iterative algorithms.
References
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Using SeDuMi 1.02, a MATLAB toolbox for optimization over symmetric cones
TL;DR: This paper describes how to work with SeDuMi, an add-on for MATLAB, which lets you solve optimization problems with linear, quadratic and semidefiniteness constraints by exploiting sparsity.
Proceedings ArticleDOI
V-BLAST: an architecture for realizing very high data rates over the rich-scattering wireless channel
TL;DR: This paper describes a wireless communication architecture known as vertical BLAST (Bell Laboratories Layered Space-Time) or V-BLAST, which has been implemented in real-time in the laboratory and demonstrated spectral efficiencies of 20-40 bps/Hz in an indoor propagation environment at realistic SNRs and error rates.
Journal ArticleDOI
Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels
TL;DR: While the proposed algorithms are suboptimal, they lead to simpler transmitter and receiver structures and allow for a reasonable tradeoff between performance and complexity.
Journal ArticleDOI
On the achievable throughput of a multiantenna Gaussian broadcast channel
Giuseppe Caire,Shlomo Shamai +1 more
TL;DR: Under certain mild conditions, this scheme is found to be throughput-wise asymptotically optimal for both high and low signal-to-noise ratio (SNR), and some numerical results are provided for the ergodic throughput of the simplified zero-forcing scheme in independent Rayleigh fading.
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