Block iterative DFE for single carrier modulation

Benvenuto, N.; Tomasin, Stefano

doi:10.1049/el:20020767

Cited by 210 publications

(141 citation statements)

References 4 publications

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“…The application of frequency-domain DFE to the SC transmission is found in [23]. In [24] and [25], an iterative block DFE, which redesigns the equalizer based on the updated block of detected symbols, is presented. Both feedforward and feedback filters are implemented using FFTs to achieve a significant complexity reduction compared to time-domain techniques.…”

Section: Literature Surveymentioning

confidence: 99%

Introduction of Frequency-Domain Signal Processing to Broadband Single-Carrier Transmissions in a Wireless Channel

Adachi

Tomeba

Takeda

2009

IEICE Trans. Commun.

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SUMMARYRecently, frequency-domain equalization (FDE) has been attracting much attention as a way to improve single-carrier (SC) signal transmission in a frequency-selective wireless channel. Since the SC signal spectrum is spread over the entire signal bandwidth, FDE can take advantage of channel frequency-selectivity and achieve the frequency diversity gain. SC with FDE is a promising wireless signal transmission technique. In this article, we review the pioneering research done on SC with FDE. The principles of simple one-tap FDE, channel estimation, and residual intersymbol interference (ISI) cancellation are presented. Multi-input/multioutput (MIMO) is an important technique to improve the transmission performance. Some of the studies on MIMO/SC with FDE are introduced.

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Section: Literature Surveymentioning

confidence: 99%

Introduction of Frequency-Domain Signal Processing to Broadband Single-Carrier Transmissions in a Wireless Channel

Adachi

Tomeba

Takeda

2009

IEICE Trans. Commun.

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“…Recently, iterative detection and decoding schemes [6][7][8][9][10][11] that utilize the soft-decisions provided by iterative channel decoders have been considered with technology development in low cost computing hardware. Especially, in [6], maximum likelihood sequence estimator (MLSE) is used for the soft-in/soft-out detection, while those in [7][8][9][10][11] utilize soft-decision feedback and interference cancellation.…”

Section: Introductionmentioning

confidence: 99%

“…Especially, in [6], maximum likelihood sequence estimator (MLSE) is used for the soft-in/soft-out detection, while those in [7][8][9][10][11] utilize soft-decision feedback and interference cancellation. In complexity point of view, MLSE has a complexity exponentially increasing with the channel length, and the scheme in [6] is not suitable for practical application even though it generally outperforms all other schemes.…”

Section: Introductionmentioning

confidence: 99%

Performance of Iterative Soft Decision Feedback Equalizers for Single-Carrier Transmission

Jeon¹,

Yoon²

2017

Journal of Electrical Engineering and Technology

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-In this paper, we consider iterative soft-decision feedback equalizers (sDFE), a.k.a. turbo equalizers for single-carrier transmission. Turbo equalizer takes log-likelihood ratio (LLR) feedback from channel decoder and convert the LLR into symbol estimates and variances to be used for the LLR update at the sDFE. Specifically, we consider both time domain and frequency-domain sDFE and compare their performances. The results shows that frequency-domain sDFE performs better than time-domain one and also that considerable gain can be obtained especially when the channel has deep nulls.

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“…The receiver is particularly simple at the downlink: since all spreading codes are affected by the same multipath channel, the receiver can be based on a linear FDE (Frequency-Domain Equalizer), operating at the chip level, followed by the despreading procedure [7]. The performances can be further improved if the linear FDE is replaced by a more powerful IB-DFE (Iterative BlockDecision feedback Equalization) [8], [9], especially for fully loaded scenarios and/or in the presence of strong interference levels [10].…”

Section: Introductionmentioning

confidence: 99%

Multiuser Detection for the Uplink of Prefix-Assisted DS-CDMA Systems Employing Multiple Transmit and Receive Antennas

Silva

Dinis

2006

IEEE Vehicular Technology Conference

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-To achieve high spectral and power efficiencies, future broadband wireless systems should combine spatial multiplexing techniques employing multiple transmit and receive antennas with transmission schemes suitable to severely time-dispersive channels such as block transmission techniques, with appropriate CP (Cyclic Prefix) and employing FDE (Frequency-Domain Equalization). Moreover, the signal to be transmitted by the MT (Mobile Terminal) should have a reduced peak power, as well as low envelope fluctuations, so as to allow an efficient power amplification.In this paper we consider the uplink transmission within a DS-CDMA system employing CP-assisted block transmission techniques combined with spatial multiplexing techniques that require multiple antennas at both the transmitter and the receiver. We present an efficient frequency-domain receiver structure with an iterative MUD (MultiUser Detection).It is shown that the performance of the proposed receiver can be close to the single-user MFB (Matched Filter Bound), even for fully loaded systems, in severely time-dispersive channels and/or in the presence of strong interfering signals.

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Block iterative DFE for single carrier modulation

Cited by 210 publications

References 4 publications

Introduction of Frequency-Domain Signal Processing to Broadband Single-Carrier Transmissions in a Wireless Channel

Introduction of Frequency-Domain Signal Processing to Broadband Single-Carrier Transmissions in a Wireless Channel

Performance of Iterative Soft Decision Feedback Equalizers for Single-Carrier Transmission

Multiuser Detection for the Uplink of Prefix-Assisted DS-CDMA Systems Employing Multiple Transmit and Receive Antennas

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