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GLOBECOM
2006
IEEE
15 years 5 months ago
Adaptive Coding and Modulation for Hybrid ARQ Systems over Partially Observable Nakagami-m Fading Channels
— We study coding and modulation rate adaptation problem for HARQ systems with partially observable state from cross-layer viewpoint. The rate of convolutionally coded MQAM is ad...
Ashok K. Karmokar, Vijay K. Bhargava
TIT
2002
128views more  TIT 2002»
14 years 11 months ago
Bandwidth scaling for fading multipath channels
Abstract--We show that very large bandwidths on fading multipath channels cannot be effectively utilized by spread-spectrum systems that (in a particular sense) spread the availabl...
Muriel Médard, Robert G. Gallager
ICC
2007
IEEE
105views Communications» more  ICC 2007»
15 years 6 months ago
Phase Noise Suppression for OFDM Systems Over Fast Time-Varying Channels
— This paper derives a phase-noise suppression scheme for orthogonal frequency division multiplexing (OFDM) systems. This scheme is a maximum likelihood approach that exploits th...
O. Can Ozdural, Huaping Liu
97
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ICASSP
2008
IEEE
15 years 6 months ago
Blind maximum-likelihood data recovery in OFDM
OFDM modulation combines the advantages of high achievable rates and relatively easy implementation. In this paper, we show how to perform blind maximum-likelihood data recovery i...
T. Y. Al-Naffouri, Ahmed Abdul Quadeer
ICC
2007
IEEE
121views Communications» more  ICC 2007»
15 years 6 months ago
On the Expected Complexity Analysis of a Generalized Sphere Decoding Algorithm for Underdetermined Linear Communication Systems
This paper presents an analytical approach to evaluate the expected complexity of a generalized sphere decoding (GSD) algorithm, GSDλ − , for underdetermined integer leastsquare...
Ping Wang, Tho Le-Ngoc