175 citations · 204 across the 6 of their papers we have counts for
6 papers
Channel State Feedback over the MIMO-MAC
K. Raj Kumar, Giuseppe Caire
We consider the problem of designing low latency and low complexity schemes for channel state feedback over the MIMO-MAC (multiple-input multiple-output multiple access channel). W…
Performance of MMSE MIMO Receivers: A Large N Analysis for Correlated Channels
Aris L. Moustakas, K Raj Kumar, Giuseppe Caire
Linear receivers are considered as an attractive low-complexity alternative to optimal processing for multi-antenna MIMO communications. In this paper we characterize the performan…
Asymptotic Performance of Linear Receivers in MIMO Fading Channels
K. Raj Kumar, G. Caire, A. L. Moustakas
Linear receivers are an attractive low-complexity alternative to optimal processing for multi-antenna MIMO communications. In this paper we characterize the information-theoretic p…
Space-Time Codes from Structured Lattices
K. Raj Kumar, Giuseppe Caire
We present constructions of Space-Time (ST) codes based on lattice coset coding. First, we focus on ST code constructions for the short block-length case, i.e., when the block-leng…
Coding and Decoding for the Dynamic Decode and Forward Relay Protocol
K. Raj Kumar, Giuseppe Caire
We study the Dynamic Decode and Forward (DDF) protocol for a single half-duplex relay, single-antenna channel with quasi-static fading. The DDF protocol is well-known and has been…
Explicit Space-Time Codes Achieving The Diversity-Multiplexing Gain Tradeoff
Petros Elia, K. Raj Kumar, Sameer A. Pawar +2
A recent result of Zheng and Tse states that over a quasi-static channel, there exists a fundamental tradeoff, referred to as the diversity-multiplexing gain (D-MG) tradeoff, betwe…