Adaptive Adjacent-Frequency Interference Mitigation in Multi-Hop Point-To-Point FDD Wireless Backhaul Networks

Author

Ni, Wei ; Collings, Iain B.

Author_Institution

CSIRO ICT Centre, Marsfield, NSW, Australia

Volume

16

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

1988

Lastpage

1991

Abstract

Adjacent-frequency interference is a critical problem in point-to-point (PTP) frequency division duplex (FDD) wireless backhaul networks. It prevents existing methods from adaptively allocating frequencies to the PTP links, reducing spectrum utilization. We propose a new algorithm which mitigates the interference and enables the frequencies to be allocated adapting to changing traffic demands. Our algorithm is developed on a new recursive guard band adjusting technique. Simulations show that our algorithm is able to improve spectrum utilization by 33%, compared to the prior art, and enhance the network satisfaction regarding allocated bandwidth by over 173%.

Keywords

cellular radio; frequency allocation; frequency division multiplexing; interference suppression; telecommunication traffic; PTP links; adaptive adjacent frequency interference mitigation; frequency allocation; frequency division duplex; multihop point-to-point FDD; network satisfaction; recursive guard band adjusting technique; spectrum utilization; traffic demands; wireless backhaul networks; Bandwidth; Complexity theory; OFDM; Radio spectrum management; Throughput; Wireless communication; Mult-hop point-to-point FDD backhaul; frequency allocation; metro cell;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.102612.121740

Filename

6343248