An Interference Cancellation Scheme for Mobile Communication Radio Repeaters

Lee, Moohong; Keum, Byungjik; Shim, Young Serk; Lee, Hwang Soo

doi:10.1587/transcom.e92.b.1778

Cited by 3 publications

(1 citation statement)

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“…In general, LI is suppressed by estimating the LI channel and then subtracting it from that of the SISO relay system [3]. However, this time domain approach is not appropriate for LI suppression in practical MIMO relay systems due to its high computational complexity.…”

Section: Introductionmentioning

confidence: 99%

Loop-interference suppression strategies using antenna selection in full-duplex MIMO relays

Sung

Ahn

Nguyen

et al. 2011

2011 International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS)

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Loop-interference (LI) from relay transmission to reception reduces the channel capacity and makes the relay system unstable in full-duplex (FD) multi-input multi-output (MIMO) relay systems. conventional schemes to suppress LI still have drawbacks: 1) incur a dispensable signal-to-noise ratio (SNR) loss in low SNR regions; 2) increase the system complexity due to the requirement of weighting matrices; and 3) make insufficient practical sense due to varying signal-to-interference ratios (SIRs). In this paper, we propose a new LI suppression scheme using transmit antenna selection in order to solve the above problems. Simulation results show that the proposed scheme outperforms a conventional scheme, especially in low SNR and high SIR regions, even though the proposed scheme has a lower complexity.

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Section: Introductionmentioning

confidence: 99%