A study of a loop interference canceller for the relay stations in an SFN for digital terrestrial broadcasting

Hamazumi, Hiroyuki; Imamura, Kuniyasu; Iai, N.; Shibuya, Kazuhiko; Sasaki, Makoto

doi:10.1109/glocom.2000.891740

Cited by 68 publications

(48 citation statements)

References 4 publications

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“…The service antenna is placed on the street-level or indoors with wider beam pattern towards the covered area while pointing away from the backhaul antenna. The interference power can then be maintained at a much lower level than in mobile relays due to increased distance and physical obstacles between the antennas, antenna polarization and directivity, or interference removal by using various signal processing algorithms [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

On the feasibility of full-duplex relaying in the presence of loop interference

Riihonen¹,

Werner²,

Wichman³

et al. 2009

2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications

145

112

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We consider a two-hop infrastructure-based relay link with three transmit power allocation methods. Both amplify-andforward and decode-and-forward protocols are studied. Fundamentally, a relay can operate either in a full-duplex or in a half-duplex mode. The performance in full-duplex relaying is degraded due to loop interference from the relay output to the relay input. On the other hand, the half-duplex mode eliminates the loop interference, but this reduces the end-to-end rate. In this paper, we study the feasibility of the full-duplex mode in terms of end-to-end capacity. In particular, we evaluate break-even loop interference levels, below which the fullduplex mode outperforms the half-duplex mode. The analysis shows that the full-duplex mode is feasible in the presence of reasonably high loop interference power and can offer higher capacity than the half-duplex mode.

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Section: Introductionmentioning

confidence: 99%

On the feasibility of full-duplex relaying in the presence of loop interference

Riihonen¹,

Werner²,

Wichman³

et al. 2009

2009 IEEE 10th Workshop on Signal Processing Advances in Wireless Communications

145

112

View full text Add to dashboard Cite

show abstract

“…(10), then the BPA m j (A 1 ) is computed again by Eqs. (8), (14), and (15). The final signal estimation is decided according to the MC rule.…”

Section: The Proposed Dempster-shafer Network Coding Scheme For Self-mentioning

confidence: 99%

“…Active suppression techniques are divided into analog suppression, digital suppression, and combined suppression. This paper focuses on digital baseband suppression techniques, which are subdivided into timedomain cancellation [15,16] and spatial-domain suppression [17][18][19][20][21][22][23][24][25]. Time-domain cancellation cancels the SI by subtracting its own transmitted signal at the reception.…”

mentioning

confidence: 99%

Novel self-interference suppression schemes based on Dempster-Shafer theory with network coding in two-way full-duplex MIMO relay

Sun

et al. 2016

J Wireless Com Network

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A two-way full-duplex multiple-input multiple-output (MIMO) relay provides effective spectral efficiency and system capacity improvement. However, self-interference (SI) as a serious problem limits the development of a full-duplex relay. In this paper, the novel SI suppression schemes based on the Dempster-Shafer (DS) evidence theory are proposed to suppress SI in the two-way full-duplex MIMO relay. DS evidence theory can appropriately characterize uncertainty and make full use of multiple evidence source information by DS combination rule to obtain reliable decisions. The first proposed DS network coding (DS-NC) scheme adopts DS evidence theory to detect the signal of each source node, considering SI suppression in the basic probability assignment computation in the multiple access phase. Moreover, different from the DS-NC scheme, the further proposed DS physical-layer network coding (DS-PNC) scheme considers SI suppression from the vector space perspective and combines the PNC mapping rule with the DS theory to obtain a network-coded signal without estimating each source node signal. In the broadcast phase, antenna selection is adopted at the relay and DS evidence theory is also applied at each source node for SI suppression. Meanwhile, the effects of imperfect SI channel estimation and the intended channel estimation on the proposed schemes are also studied. Finally, the proposed DS-PNC scheme is studied with the SI signal model which considers analog radio frequency cancellation, the effects of I/Q modulator imbalances, and power amplifier nonlinearity of the transmitter. Simulation results reveal that the proposed DS-PNC scheme is a little more sensitive to the channel estimation errors than the traditional spatial-domain schemes. However, with the perfect channel state information, the proposed DS-NC with one iteration and DS-PNC schemes outperform traditional spatial-domain schemes. Furthermore, considering the SI signal model with nonlinear distortion and radio frequency cancellation, the DS-PNC scheme is also superior to the traditional schemes. Meanwhile, the DS-PNC scheme is more robust to the SI and achieves the same diversity gain as the ideal cancellation.

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“…송 중계기를 개발, 상용화하려는 연구가 활발히 이 루어지고 있다 [9][10][11][12][13] . 기존의 DOCR들과 구분되는 EDOCR은 특징들 은 다음과 같다 [5][6][7] .…”

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Performance Enhancement of the Feedback Interference Canceller for the EDOCR in the ATSC DTV System

Lee

Kim

2013

The Journal of Korea Information and Communications Society

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A study of a loop interference canceller for the relay stations in an SFN for digital terrestrial broadcasting

Cited by 68 publications

References 4 publications

On the feasibility of full-duplex relaying in the presence of loop interference

On the feasibility of full-duplex relaying in the presence of loop interference

Novel self-interference suppression schemes based on Dempster-Shafer theory with network coding in two-way full-duplex MIMO relay

Performance Enhancement of the Feedback Interference Canceller for the EDOCR in the ATSC DTV System

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