Proceedings ArticleDOI
Iterative Frequency-Domain Equalization for general constellations
Rui Dinis,Paulo Montezuma,Nuno Souto,João Carlos Silva +3 more
- pp 137-141
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TLDR
This paper proposes a general method for designing IB-DFE receivers for any constellation based on an analytical characterization of the mapping rule were the constellation symbols are written as a linear function of the transmitted bits.Abstract:
IB-DFE (Iterative Block DFE) is a promising turbo equalization technique for SC-FDE schemes (Single-Carrier with Frequency Domain Equalization). However, typical IB-DFE implementations are tailored for a specific constellation (usually QPSK). In this paper we propose a general method for designing IB-DFE receivers for any constellation. Our approach relies on an analytical characterization of the mapping rule were the constellation symbols are written as a linear function of the transmitted bits. This method is then employed in both uniform and non-uniform QAM constellations.read more
Citations
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Journal ArticleDOI
Performance Analysis of Two-Way Relaying Networks With the $N$ th Worst Relay Selection Over Various Fading Channels
TL;DR: The outage probability and bit-error-rate expressions of the proposed scheme are derived and the system performance of the considered system under two different fading models: lognormal shadowing channels and generalized-K fading channels is analyzed.
Journal ArticleDOI
Impact of Channel Estimation Errors on SC-FDE Systems
TL;DR: A modified IB-DFE is proposed which incorporates knowledge of the channel estimation error model and its performance becomes more robust against the presence of strong error components in the channel estimates.
Journal ArticleDOI
Massive MIMO Techniques for 5G and Beyond—Opportunities and Challenges
TL;DR: The purpose of this article is to describe the most acknowledged transmission techniques for massive MIMO systems and to analyze some of the most promising ones and identify existing problems and limitations.
Journal ArticleDOI
SC-FDE for Offset Modulations: An Efficient Transmission Technique for Broadband Wireless Systems
TL;DR: This paper considers frequency-domain receiver design for OQPSK and OQAM schemes, and proposes several FDE designs where there is no IQI in the sampling instants as well as iterative FDE receivers with IQI cancellation.
Journal ArticleDOI
Iterative Frequency-Domain Detection for IA-Precoded MC-CDMA Systems
TL;DR: This scheme achieves the maximum degrees of freedom provided by the IA precoding, while allowing an almost optimum space-diversity gain, with performance close to the matched filter bound (MFB).
References
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Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
TL;DR: This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions and discusses similarities and differences of SC and OFDM systems and coexistence possibilities, and presents examples of SC-FDE performance capabilities.
Journal ArticleDOI
Turbo equalization: principles and new results
TL;DR: It is shown that the performance of the new approaches to combining equalization based on linear filtering, with decoding is similar to the trellis-based receiver, while providing large savings in computational complexity.
Journal ArticleDOI
Block iterative DFE for single carrier modulation
Nevio Benvenuto,Stefano Tomasin +1 more
TL;DR: An iterative block decision feedback equaliser (IB-DFE) for single carrier modulation is proposed which operates on blocks of the receive signal, thus allowing the use of error correction codes on the feedback data signal.
Journal ArticleDOI
A hierarchical modulation for upgrading digital broadcast systems
Hong Jiang,Paul A. Wilford +1 more
TL;DR: Analysis will be performed to show the tradeoff between bit rate of the data in secondary constellation and the penalty to the performance of receiving the basic constellation.
Journal ArticleDOI
Iterative design and detection of a DFE in the frequency domain
Nevio Benvenuto,Stefano Tomasin +1 more
TL;DR: From performance simulations on a wireless dispersive fading channel, it is observed that the IBDFE outperforms existing DFEs and exhibits a reduction of the computational complexity when compared against existing schemes, both in signal processing and in filter design.