Iterative Layered Space-Time Receivers for Single-Carrier Transmission Over Severe Time-Dispersive Channels

Dinis, Rui; Kalbasi, Reza; Falconer, D.D.; Banihashemi, Amir H.

doi:10.1109/lcomm.2004.835339

Cited by 124 publications

(75 citation statements)

References 7 publications

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“…The structure of the iterative receiver which is a direct extension of the IBDFE proposed in [1] with several receive antennas (and similar to the one presented in [11] for only one user) is shown in Fig. 1.…”

Section: Iterative Receiver Architecturementioning

confidence: 99%

“…This interference can be suppressed using several techniques like coordinated scheduling, cooperative processing or interference cancellation. Although techniques employed in spatial multiplexed receivers [11]- [14] can be used for removing interference, in addition to the main user they also require estimating the interferers' streams thus adding substantial complexity. Therefore, among several interference cancellation techniques, the linear IRC [15] which avoids explicit knowledge of the interferers' streams, is one of the most attractive due its simplicity and direct extension to the conventional MMSE detector and has been studied for use in 3GPP LTE systems [16]- [19].…”

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confidence: 99%

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Interference Aware Iterative Block Decision Feedback Equalizer for Single Carrier Transmission

Souto

Dinis²,

Correia

et al. 2014

IEEE Trans. Veh. Technol.

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Abstract-The deployment of increasingly dense heterogeneous mobile networks can create high levels of interference among users which, combined with severe time dispersive channels, can result in substantial performance degradation. In order to cope with both effects, in this paper we propose an iterative block decision feedback equalizer (IBDFE) for single carrier (SC) transmissions which makes use of the correlation between the interference in the receiving antennas and minimizes the mean squared error (MSE) of the detected symbols. Our analytic and simulated performance results show that the proposed receiver can clearly outperform the conventional IBDFE and the linear interference rejection combining (IRC) detector in severely time-dispersive channels with strong cochannel interference.

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Section: Iterative Receiver Architecturementioning

confidence: 99%

mentioning

confidence: 99%

Interference Aware Iterative Block Decision Feedback Equalizer for Single Carrier Transmission

Souto

Dinis²,

Correia

et al. 2014

IEEE Trans. Veh. Technol.

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show abstract

“…For the sake of simplicity, the dependence on the iteration index is dropped in (12) and in the following equations. After some mathematical manipulations, it can be shown that (12) is reduced as…”

Section: Ib-dfe Sic Approachmentioning

confidence: 99%

“…For this reason, there has been significant interest in the design of nonlinear FDE in general and decision feedback FDE in particular, with the IB-DFE being the most promising nonlinear FDE [7,8]. IB-DFE was originally proposed in [9] and was extended for a wide range of scenarios in the last 10 years, ranging from diversity scenarios [10,11], MIMO systems [12], CDMA systems [13,14], and multi-access scenarios [15,16], among many other. Essentially, the IB-DFE can be regarded as a low complexity turbo equalizer [17][18][19][20] implemented in the frequency domain that do not require the channel decoder output in the feedback loop, although true turbo equalizers based on the IB-DFE concept can also be designed [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of IB-DFE-based strategies for SC-FDMA systems

Silva

Assunção

Dinis

et al. 2013

J Wireless Com Network

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The aim of this paper is to propose and evaluate multi-user iterative block decision feedback equalization (IB-DFE) schemes for the uplink of single-carrier frequency-division multiple access (SC-FDMA)-based systems. It is assumed that a set of single antenna users share the same physical channel to transmit its own information to the base station, which is equipped with an antenna array. Two space-frequency multi-user IB-DFE-based processing are considered: iterative successive interference cancellation and parallel interference cancellation. In the first approach, the equalizer vectors are computed by minimizing the mean square error (MSE) of each individual user, at each subcarrier. In the second one, the equalizer matrices are obtained by minimizing the overall MSE of all users at each subcarrier. For both cases, we propose a simple yet accurate analytical approach for obtaining the performance of the discussed receivers. The proposed schemes allow an efficient user separation, with a performance close to the one given by the matched filter bound for severely time-dispersive channels, with only a few iterations.

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“…In this paper, we consider MIMO-CPSC schemes with large K and L. In MIMO-CPSC systems, the overall MIMO channel includes a fast Fourier transform (FFT) operation so that the transmitted symbols are estimated from the received signal in the frequency domain. Frequency domain (FD) linear equalization including minimum mean square error (MMSE) equalization [6], [8], and decision feedback equalization [10], [11] for single carrier MIMO systems are known. The use of FD equalizers in turbo equalization was investigated in [12], [13].…”

Section: Introductionmentioning

confidence: 99%

Frequency Domain Turbo Equalization for MIMO-CPSC Systems with Large Delay Spreads

Itankar

Chockalingam

2012

2012 IEEE 75th Vehicular Technology Conference (VTC Spring)

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Abstract-In this paper, we consider low-complexity turbo equalization for multiple-input multiple-output (MIMO) cyclic prefixed single carrier (CPSC) systems in MIMO inter-symbol interference (ISI) channels characterized by large delay spreads. A low-complexity graph based equalization is carried out in the frequency domain. Because of the reduction in correlation among the noise samples that happens for large frame sizes and delay spreads in frequency domain processing, improved performance compared to time domain processing is shown to be achieved. This improved performance is attractive for equalization in severely delay spread ISI channels like ultrawideband channels and underwater acoustic channels.

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Iterative Layered Space-Time Receivers for Single-Carrier Transmission Over Severe Time-Dispersive Channels

Cited by 124 publications

References 7 publications

Interference Aware Iterative Block Decision Feedback Equalizer for Single Carrier Transmission

Interference Aware Iterative Block Decision Feedback Equalizer for Single Carrier Transmission

Performance evaluation of IB-DFE-based strategies for SC-FDMA systems

Frequency Domain Turbo Equalization for MIMO-CPSC Systems with Large Delay Spreads

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