Title :
Modeling and compensation of antenna RF switching non-idealities in OFDM receivers
Author :
Bondalapati, Pratheep ; Won Namgoong ; Torlak, Murat
Author_Institution :
Dept. of Electr. Eng., Univ. of Texas at Dallas, Dallas, TX, USA
Abstract :
Antenna RF switches are radio frequency components used in spatial diversity systems in wireless communi-cations. In this paper, we investigate the transient effects of the antenna RF switching on the receiver front-end. We show experimentally that the duration of this effect can be significant compared to an OFDM (Orthogonal Frequency Division Multiplexing) guard period used in wireless systems. A simple memoryless time-varying model of the antenna is then developed. After quantifying the performance degradation in an OFDM system caused by the RF switching, a digital compensator to minimize this performance degradation is presented.
Keywords :
OFDM modulation; diversity reception; memoryless systems; radio receivers; receiving antennas; time-varying systems; OFDM receiver; antenna RF switching nonideality compensation; antenna RF switching transient effect; digital compensator; memoryless time-varying model; orthogonal frequency division multiplexing; performance degradation minimization; radio frequency component; spatial diversity system; wireless communication; Antenna measurements; Antennas; OFDM; Ports (Computers); Radio frequency; Receivers; Switches; Switching non-ideality; antenna switching; estimation and equalization; modeling;
Conference_Titel :
Circuits and Systems Conference (DCAS), 2014 IEEE Dallas
Conference_Location :
Richardson, TX
DOI :
10.1109/DCAS.2014.6965344
