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TCOM
2008
81views more  TCOM 2008»
8 years 9 months ago
Optimum Power Allocation for Multiuser OFDM with Arbitrary Signal Constellations
This paper formulates power allocation policies that maximize the region of mutual informations achievable in multiuser downlink OFDM channels. Arbitrary partitioning of the availa...
Angel Lozano, Antonia Maria Tulino, S. Verdii
ICC
2007
IEEE
114views Communications» more  ICC 2007»
9 years 1 months ago
Channel-Matched Spreading Codes for the Downlink of MC-CDMA
Abstract-- This paper concerns the multiple access performance of spreading codes used in the downlink of multicarrier code-division multiple-access (MC-CDMA). Complex-valued sprea...
Qinghua Shi, Yong Liang Guan, Choi Look Law
VTC
2006
IEEE
9 years 3 months ago
Transmitter-Based Pre-Processing for OFDM-CDMA Forward-Link Systems with Two-Dimensional Spreading
—Transmitter-based signal pre-processing is investigated for the two-dimensional (2-D) OFDM-CDMA (orthogonal frequency division multiplexing, code division multiple access) forwa...
Chih-Cheng Kuo, Wern-Ho Sheen, Chung-Ju Chang, Cha...
GLOBECOM
2006
IEEE
9 years 3 months ago
Error Probability of OFDM with Carrier Frequency Offset in AWGN and Fading Channels
— In this paper we investigate the error probability for OFDM with carrier frequency offset (CFO) in additive white Gaussian noise (AWGN) and Rayleigh fading channels. The statis...
Himal A. Suraweera, Jean Armstrong
ICC
2007
IEEE
165views Communications» more  ICC 2007»
9 years 3 months ago
Capacity Analysis of MIMO System Over Identically Independent Distributed Weibull Fading Channels
— The capacity of multiple input multiple output (MIMO) system over wireless channels has been investigated analytically and by simulation over different types of wireless fading...
Ibrahim Y. Abualhaol, Mustafa M. Matalgah
ICC
2007
IEEE
9 years 3 months ago
Space-Time Coded Systems with Joint Transmit and Receive Antenna Selection
— This paper studies performance of space-time coded (STC) systems with joint transmit and receive antenna selection over multiple input multiple output (MIMO) flat and frequenc...
Tansal Gucluoglu, Tolga M. Duman
VTC
2008
IEEE
218views Communications» more  VTC 2008»
9 years 3 months ago
Performance Analysis of a System using Coordinate Interleaving and Constellation Rotation in Rayleigh Fading Channels
Abstract— Diversity can play an important role in the performance improvement of a communication system in fading channels. The achievable performance with signal space diversity...
Nauman F. Kiyani, Jos H. Weber, Alenka G. Zajic, G...
CISS
2008
IEEE
9 years 3 months ago
Incorporating retransmission diversity in quality-of-service guaranteed multi-user scheduling
Abstract— A cross-layer optimization combining retransmission diversity with multi-user diversity is investigated for wireless communications. To this end, a joint design of adap...
Xin Wang, Di Wang, Irena Li, Hanqi Zhuang, Salvato...
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