A Method for Broadband Full-Duplex MIMO Radio

Author

Yingbo Hua ; Ping Liang ; Yiming Ma ; Cirik, Ali Cagatay ; Qian Gao

Author_Institution

Dept. of Electr. Eng., Univ. of California, Riverside, CA, USA

Volume

19

Issue

12

fYear

2012

Firstpage

793

Lastpage

796

Abstract

We present a time-domain transmit beamforming (TDTB) method for self-interference cancelation (SIC) at the radio frequency (RF) frontend of the receivers on broadband full-duplex MIMO radios. It is shown that the conventional frequency-domain transmit beamforming (FDTB) method along with the orthogonal frequency division multiplexing (OFDM) framework does not generally perform SIC in the prefix region of a transmitted frame. A hardware based test of the TDTB method shows a 50 dB SIC over a bandwidth of 30 MHz.

Keywords

MIMO communication; OFDM modulation; array signal processing; broadband networks; frequency-domain analysis; interference suppression; radio receivers; radiofrequency interference; time-domain analysis; FDTB method; OFDM; RF frontend; SIC; TDTB method; bandwidth 30 MHz; broadband full-duplex MIMO radio; frequency-domain transmit beamforming method; gain 50 dB; orthogonal frequency division multiplexing; radio receiver; radiofrequency frontend; self-interference cancelation; time-domain transmit beamforming method; Array signal processing; Generators; Radio frequency; Receiving antennas; Silicon carbide; Transmitting antennas; Full-duplex radar; full-duplex wireless communication; single channel full-duplex;

fLanguage

English

Journal_Title

Signal Processing Letters, IEEE

Publisher

ieee

ISSN

1070-9908

Type

jour

DOI

10.1109/LSP.2012.2221710

Filename

6319352