Turbo Equalization for Single Antenna Cochannel Interference Cancellation in Single Carrier Transmission Systems

Nickel, Patrick; Gerstacker, Wolfgang H.; Koch, Wolfgang

doi:10.1109/glocom.2007.639

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…Thus, new concepts are required in order to enable SAIC for PSK/QAM. To this end, schemes based on a joint detection of the desired signal and the strongest interferer have been proposed in [13]. However, joint detection schemes are quite complex and restricted to synchronous networks.…”

Section: Introductionmentioning

confidence: 99%

Single Antenna Interference Cancellation for GSM/VAMOS/EDGE Using <inline-formula> <tex-math notation="TeX">$L_{p}$</tex-math></inline-formula>-Norm Detection and Decoding

Ruder

Lehmann

Schober

et al. 2015

IEEE Trans. Wireless Commun.

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Different schemes for single antenna interference cancellation (SAIC) in the Global System for Mobile Communications (GSM) have been proposed so far. Most of these schemes work best in synchronous interference environments and are limited to Gaussian minimum-shift keying (GMSK) modulation. In this paper, we propose several modifications of the conventional GSM receiver, which target the harmful effects of asynchronous co-channel interference (ACCI). Based on the observation that the impairment caused by ACCI cannot be modeled as additive Gaussian noise, which was assumed for the derivation of the metric used in state-of-the-art receivers, we propose to model the impairment as Generalized Gaussian noise (GGN). This leads to modifications of the conventional branch metrics of the reduced-state equalizer and the decoder employed at the receiver. Both proposed modifications are applicable to any linear modulation alphabet and do not require any modification of the GSM air interface. Hence, the proposed novel branch metrics are also applicable in Enhanced Data Rates for GSM Evolution (EDGE) systems which employ 8-ary phase-shift keying (8-PSK) modulation and where the SAIC algorithms tailored for GMSK cannot be used. Furthermore, we show that the proposed branch metric modifications also improve the performance of the new Voice Services over Adaptive Multi-user channels on One Slot (VAMOS) extension of GSM in ACCI environments. Based on simulation results, the performance of the proposed schemes is compared with that of an unmodified receiver employing the conventional Gaussian metric. We show that the proposed receivers outperform the unmodified receiver in ACCI environments and discuss the complexity entailed by the proposed branch metric modifications.

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Section: Introductionmentioning

confidence: 99%

Single Antenna Interference Cancellation for GSM/VAMOS/EDGE Using <inline-formula> <tex-math notation="TeX">$L_{p}$</tex-math></inline-formula>-Norm Detection and Decoding

Ruder

Lehmann

Schober

et al. 2015

IEEE Trans. Wireless Commun.

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“…Both in GSM and EDGE networks the CCI reduction is a crucial task due to the fact that the network capacity is limited by the CCI rather than noise. Recently, some solutions to solve this problem are multiple antennas technique [1,2,5], single antenna technique [3,4,6], frequency hopping technique [7], polarized antenna technique [8,9] for both narrowband and wideband systems. Each technique has its own pops and corns.…”

Section: Introductionmentioning

confidence: 99%

Design a Trellis-Based Receiver to Combat CCI in EDGE Network

Linh

Bac

2014

AMM

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Like in GSM network the co-channel interference (CCI) is popular in EDGE network due to the problem of reusing frequency in distant cells. Although the distance between cells using the same frequencies is quite far but CCI still causes significant effect to the channel capacity rather than noise. In fact, many solutions were introduced to reduce the CCI accompanied with improving network capacity such as using MIMO scheme or SAIC scheme. The paper describes a novel receiver model which provides better performance than that of a SAIC system as well as smaller size and cost than a MIMO system. This proposed receiver uses two co-located antennas with difference polarizations to improve the total performance of the system. In addition, this receiver can be applied effectively in high-modulation scheme, for instant, 8-PSK modulation format in an EDGE network and /or in presence of more than one dominant interference.

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Channel Capacity Evaluation of Single Antenna Interference Cancellation for Single Carrier Transmission Systems

Nickel

Gerstacker

Koch

2008

2008 International Wireless Communications and Mobile Computing Conference

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Turbo Equalization for Single Antenna Cochannel Interference Cancellation in Single Carrier Transmission Systems

Cited by 6 publications

References 22 publications

Single Antenna Interference Cancellation for GSM/VAMOS/EDGE Using <inline-formula> <tex-math notation="TeX">$L_{p}$</tex-math></inline-formula>-Norm Detection and Decoding

Single Antenna Interference Cancellation for GSM/VAMOS/EDGE Using <inline-formula> <tex-math notation="TeX">$L_{p}$</tex-math></inline-formula>-Norm Detection and Decoding

Design a Trellis-Based Receiver to Combat CCI in EDGE Network

Channel Capacity Evaluation of Single Antenna Interference Cancellation for Single Carrier Transmission Systems

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