Title :
A Reduced-Complexity Multiband MIMO Receiver with Estimation of Analog Devices Imperfection
Author :
Ohta, Tomoya ; Morikura, Masahiro ; Denno, Satoshi
Author_Institution :
Grad. Sch. of Inf., Kyoto Univ., Kyoto, Japan
Abstract :
Cognitive radios are of interest because they are capable of high frequency utilization efficiency. Multiband multiple-input multiple-output (MIMO) receivers based on heterodyne reception have been proposed for use in cognitive radios. This paper proposes a reduced-complexity multiband MIMO receiver that can achieve high performance by correcting the imperfection of the Hilbert transformer in the intermediate frequency (IF) band. However, the imperfection of the analog devices in the feedback loop causes poor performance. Therefore, a scheme for correcting the imperfection of the analog devices is proposed.
Keywords :
Hilbert transforms; MIMO communication; cognitive radio; communication complexity; estimation theory; feedback; heterodyne detection; radio receivers; Hilbert transformer; IF band; MIMO receivers; analog devices imperfection estimation; cognitive radios; feedback loop; heterodyne reception; high frequency utilization efficiency; intermediate frequency band; multiband multiple-input multiple-output receivers; reduced-complexity multiband MIMO receiver; Baseband; Bit error rate; Estimation; MIMO; Performance evaluation; Receivers; Vectors;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th
Conference_Location :
Yokohama
Print_ISBN :
978-1-4673-0989-9
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2012.6239940
