Smart Antennas for Next Generation Wireless Systems
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Citation: EURASIP Journal on Wireless Communications and Networking 2008 2007:020427
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Capacity of MIMO-OFDM with Pilot-Aided Channel Estimation
An analytical framework is established to dimension the pilot grid for MIMO-OFDM operating in time-variant frequency selective channels. The optimum placement of pilot symbols in terms of overhead and power al...
Citation: EURASIP Journal on Wireless Communications and Networking 2008 2007:032460 -
Diversity Characterization of Optimized Two-Antenna Systems for UMTS Handsets
This paper presents the evaluation of the diversity performance of several two-antenna systems for UMTS terminals. All the measurements are done in a reverberation chamber and in a Wheeler cap setup. First, a ...
Citation: EURASIP Journal on Wireless Communications and Networking 2008 2007:037574 -
Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems
Antenna subarray formation is a novel RF preprocessing technique that reduces the hardware complexity of MIMO systems while alleviating the performance degradations of conventional antenna selection schemes. W...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:056471 -
Transmit Diversity at the Cell Border Using Smart Base Stations
We address the problems at the most critical area in a cellular multicarrier code division multiple access (MC-CDMA) network, namely, the cell border. At a mobile terminal the diversity can be increased by usi...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:060654 -
A Simplified Constant Modulus Algorithm for Blind Recovery of MIMO QAM and PSK Signals: A Criterion with Convergence Analysis
The problem of blind recovery of QAM and PSK signals for multiple-input multiple-output (MIMO) communication systems is investigated. We propose a simplified version of the well-known constant modulus algorith...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:090401 -
SmartMIMO: An Energy-Aware Adaptive MIMO-OFDM Radio Link Control for Next-Generation Wireless Local Area Networks
Multiantenna systems and more particularly those operating on multiple input and multiple output (MIMO) channels are currently a must to improve wireless links spectrum efficiency and/or robustness. There exis...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:098186 -
Inter- and Intrasite Correlations of Large-Scale Parameters from Macrocellular Measurements at 1800 MHz
The inter- and intrasite correlation properties of shadow fading and power-weighted angle spread at both the mobile station and the base station are studied utilizing narrowband multisite MIMO measurements in ...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:025757 -
Distributed Antenna Channels with Regenerative Relaying: Relay Selection and Asymptotic Capacity
Multiple-input-multiple-output (MIMO) techniques have been widely proposed as a means to improve capacity and reliability of wireless channels, and have become the most promising technology for next generation...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:021093 -
Cross-Layer Admission Control Policy for CDMA Beamforming Systems
A novel admission control (AC) policy is proposed for the uplink of a cellular CDMA beamforming system. An approximated power control feasibility condition (PCFC), required by a cross-layer AC policy, is deriv...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:014562 -
Multiple-Antenna Interference Cancellation for WLAN with MAC Interference Avoidance in Open Access Networks
The potential of multiantenna interference cancellation receiver algorithms for increasing the uplink throughput in WLAN systems such as 802.11 is investigated. The medium access control (MAC) in such systems ...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:051358 -
Employing Coordinated Transmit and Receive Beamforming in Clustering Double-Directional Radio Channel
A novel beamforming (BF) system that employs two switched beam antennas (SBAs) at both ends of the wireless link in an indoor double-directional radio channel (DDRC) is proposed. The distributed directivity ga...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:057175 -
Tower-Top Antenna Array Calibration Scheme for Next Generation Networks
Recently, there has been increased interest in moving the RF electronics in basestations from the bottom of the tower to the top, yielding improved power efficiencies and reductions in infrastructural costs. T...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:041941 -
Joint Estimation of Mutual Coupling, Element Factor, and Phase Center in Antenna Arrays
A novel method is proposed for estimation of the mutual coupling matrix of an antenna array. The method extends previous work by incorporating an unknown phase center and the element factor (antenna radiation ...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:030684 -
Optimal Design of Uniform Rectangular Antenna Arrays for Strong Line-of-Sight MIMO Channels
We investigate the optimal design of uniform rectangular arrays (URAs) employed in multiple-input multiple-output communications, where a strong line-of-sight (LOS) component is present. A general geometrical mod...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:045084 -
Optimal Design of Nonuniform Linear Arrays in Cellular Systems by Out-of-Cell Interference Minimization
Optimal design of a linear antenna array with nonuniform interelement spacings is investigated for the uplink of a cellular system. The optimization criterion considered is based on the minimization of the ave...
Citation: EURASIP Journal on Wireless Communications and Networking 2007 2007:093421