Sciweavers

112 search results - page 3 / 23
» Transmit Beamforming for Frequency-Selective Channels
Sort
View
TCOM
2010
162views more  TCOM 2010»
12 years 11 months ago
Power Allocation in MMSE Relaying over Frequency-Selective Rayleigh Fading Channels
Abstract--This paper develops an amplify-and-forward relaying scheme for multiuser wireless cooperative networks under frequency-selective block-fading. Single-carrier frequency di...
Tung T. Pham, Ha H. Nguyen, Hoang Duong Tuan
VTC
2010
IEEE
172views Communications» more  VTC 2010»
13 years 3 months ago
Two-Slot Channel Estimation for Analog Network Coding Based on OFDM in a Frequency-Selective Fading Channel
—Recently, broadband analog network coding (ANC) was introduced to utilize high-data rate transmission over the wireless – frequency selective fading – channel. However, ANC ...
Tomas Sjodin, Haris Gacanin, Fumiyuki Adachi
TWC
2008
117views more  TWC 2008»
13 years 4 months ago
On the design, selection algorithm and performance analysis of limited feedback transmit beamforming
Multiple-input multiple-output (MIMO) systems achieve significant diversity and array gains by using transmit beamforming. When complete channel state information (CSI) is not avai...
Alireza Ghaderipoor, Chintha Tellambura
VTC
2008
IEEE
139views Communications» more  VTC 2008»
13 years 11 months ago
Downlink Steered Space-Time Spreading For Multi-Carrier Transmission Over Frequency Selective Channels
— This paper presents a novel amalgam of Steered Space-Time Spreading (SSTS) and Orthogonal Frequency Division Multiple Access (OFDMA) designed for attaining both spatial diversi...
Nazar Sahal, Mohammed El-Hajjar, Lajos Hanzo
ICC
2007
IEEE
155views Communications» more  ICC 2007»
13 years 11 months ago
Capacity Achieving Pilot Design for MIMO-OFDM over Time-Varying Frequency-Selective Channels
— In this paper1 we analyze the capacity of MIMOOFDM systems that utilize pilot symbols to acquire estimation of the radio channel at the receiver. An analytical framework is dev...
Ivan Cosovic, Gunther Auer