On Adjacent Channel Interference Mitigation for Rotating MIMO Receivers

Zaidel B, Müller R (2015)


Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Book Volume: 14

Pages Range: 5763-5779

Journal Issue: 10

DOI: 10.1109/TWC.2015.2442986

Abstract

Virtually rotating antennas, which rotate once or several times during a symbol interval, have been considered in recent years as a compact (in volume) alternative for achieving additional degrees of freedom compared to standard multiple antenna receivers. Antenna rotation effectively induces bandwidth expansion at the receiver, which in turn increases the effective dimensionality, and may potentially allow for spatial multiplexing. However, in a licensed spectrum such bandwidth expansion also introduces interference from signals transmitted in adjacent frequency bands. This paper investigates to what extent such adjacent channel interference can be mitigated by appropriate signal processing. The potentially achievable throughput of systems employing multiple virtually rotating antennas is examined analytically in a multiuser setting, while considering the large system limit, and employing random matrix theory tools. The analysis focuses on the linear minimum mean-square error (MMSE) receiver, and a receiver that optimally decodes the transmissions of desired users, while being unaware of the codebooks of interferers. The achievable throughput is compared to the corresponding throughputs of standard multiple antenna receivers employing the same number of physical active antenna elements. Conditions for virtually rotating antennas to be beneficial are identified, which when met are shown to lead to significant performance enhancement over standard multiple antenna receivers.

Authors with CRIS profile

Involved external institutions

How to cite

APA:

Zaidel, B., & Müller, R. (2015). On Adjacent Channel Interference Mitigation for Rotating MIMO Receivers. IEEE Transactions on Wireless Communications, 14(10), 5763-5779. https://dx.doi.org/10.1109/TWC.2015.2442986

MLA:

Zaidel, Benjamin, and Ralf Müller. "On Adjacent Channel Interference Mitigation for Rotating MIMO Receivers." IEEE Transactions on Wireless Communications 14.10 (2015): 5763-5779.

BibTeX: Download