SC-FDE

About: SC-FDE is a research topic. Over the lifetime, 438 publications have been published within this topic receiving 7547 citations.

Cyclic Block Construction with and without Intrafix Symbols for SC-FDE of SOQPSK-TG

Abstract: We study the construction method of cyclic data block in the single-carrier frequency domain equalization(SC-FDE) system of Shaped-offset quadrature phase shift keying(SOQPSK)-TG signal, so that the constructed cyclic data block satisfies the characteristics of phase continuity and cyclicity. Based on the construction method of cyclic data block with two-bit intrafix symbols, this paper proposes a cyclic data block construction method without intrafix symbols, which just adds a cyclic prefix before the valid data block to compensate the influence of the fading channel on the signal in the frequency domain. And then its feasibility is proved by the state vector of SOQPSK-TG. So the method for constructing cyclic data block without intrafix symbols can simplify the structure of the cyclic data block and further reduce the overhead of the system, which enables more efficiently use of the limited bandwidth for short burst communication system.

Analytical Performance Evaluation of Low-Complexity FDE Receivers for Uplink Massive MIMO with Coarse ADCs

Abstract: Single-carrier with frequency-domain equalization (SC-FDE) modulations are a natural choice for the uplink of massive multiple intput, multiple output (MIMO) systems, due to the low peak-to-average power ratio (PAPR) of their signals. However, equalization techniques should avoid matrix inversions. On the other hand, energy-efficient analog-to-digital converters (ADCs) should be used in each receive branch to reduce the power consumption and the implementation complexity, which might lead to strong nonlinear distortion effects. In this work, we present the analytical performance evaluation of nonlinear massive MIMO systems based on SC-FDE systems employing low-complexity, iterative FDE receivers1.

Performance evaluation of single carrier frequency domain equilizer (sc-fde) over impulsive noise channel

Abstract: Impulsive noise is considered as one of the major source of disturbance in the state-of-the-art multicarrier (MC) communication systems. Therefore, several techniques are being constantly proposed to eliminate the effect of such noise. In this work, a time domain matrix interleaved is compiled with a single carrier frequency domain equalizer (SC-FDE) is proposed to reduce the deleterious effects of impulsive noise. A mathematical model for the proposed scheme is also presented in this paper. Simulation results show that the proposed technique superiors the interleaved multicarrier system where the proposed scheme can completely avoid the error floors not only at high signal-to-noise ratio (SNR) but also at heavily distributed impulsive noise. The bit-error-rate (BER) of the alternative proposed scheme decreases as the signal-to-noise ratio (SNR) increases whereas the BER of the standard system suffers from error-floors with a constant BER at about 10-3 for about 8 dB SNR for medium and heavily impulsive noise.

A Differential MIMO SC-FDE Transceiver Design over Multipath Fast Fading Channels

Abstract: In this paper, we propose a new differential MIMO single-carrier system with frequency-domain equalization (SC-FDE) aided by the insertion of cyclic prefix. This block transmission system not only inherits all the merits of the SISO SC-FDE system, but is also equipped with a differential space-time block coding (DSTBC) such as to combat the fast-changing frequency selective fading channels without the needs to estimate and then compensate the channel effects. Hence, for practical applications, it has the additional merits of decoding simplicity and robustness against high mobility transmission environments. Computer simulations show that the proposed system can provide diversity benefit as the non-differential system does, while greatly reducing the receiver complexity.

Tail Data Iteration in SC-FDE without CP System

Abstract: This paper presents the influence on performance in SC-FDE (Single Carrier with Frequency Domain Equalization) without CP (cyclic prefix) system. ICI (Inter Carrier Interference) is imposed since channel respond not appear circular. To alleviate the interference, we propose a simple method by using the tail data in the frame to compensate. But error is also introduced. In order to reduce it, iteration is taken into account. Simulation results show that the combination of tail data and iteration has a low complexity but a performance similar to that with CP.