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TWC
2010
15 years 1 months ago
Closed-Loop Transmit Diversity with Imperfect Feedback
The closed-loop transmit diversity technique is used to improve the performance of the downlink channel in MIMO communication systems. In these closed-loop systems, feedback delay...
A. Heidari, Amir K. Khandani
TWC
2010
15 years 1 months ago
On the Impact of Channel Estimation Errors on MAC Protocols for MIMO Ad Hoc Networks
In this paper, we evaluate the performance of a Medium Access Control (MAC) protocol for MIMO ad hoc networks under imperfect channel estimation. To this end, we also present an an...
Davide Chiarotto, Paolo Casari, Michele Zorzi
TWC
2010
15 years 1 months ago
On overloaded vector precoding for single-user MIMO channels
We address the possibility of overloaded vector precoding in single user MIMO channels, i.e. the number of data streams is larger than the minimum of the number of antennas at tran...
R. De Miguel, Vesna Gardasevic, Ralf R. Mülle...
TWC
2010
15 years 1 months ago
Reduced-complexity baseband compensation of joint Tx/Rx I/Q imbalance in mobile MIMO-OFDM
Direct-conversion multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) transceivers enjoy high data rates and reliability at practical implementati...
Balachander Narasimhan, Sudharshan Narayanan, Hlai...
TWC
2010
15 years 1 months ago
Beamforming in MISO Systems: Empirical Results and EVM-Based Analysis
We present an analytical, simulation, and experimental-based study of beamforming Multiple Input Single Output (MISO) systems. We analyze the performance of beamforming MISO syste...
Melissa Duarte, Ashutosh Sabharwal, Chris Dick, Ra...