Results 141 to 150 of about 355 (175)

A bit-loading algorithm in SC-FDE system

2006 IEEE Radio and Wireless Symposium, 2006
In this paper, we propose a novel concept-sequenced optimal signal subspace, based on which a bit-loading algorithm in SC-FDE system is investigated. Compared with the bit-loading algorithm in OFDM system, the proposed algorithm here has more flexibility and lower complexity. Simulation results show that they have similar performance, so this algorithm
null Jing Yuan, null Yan Du, null Liang Going, null Jianfei Li   +3 more
openaire   +1 more source

Comparison of error probability for OFDM and SC-FDE

The Thrity-Seventh Asilomar Conference on Signals, Systems & Computers, 2003, 2004
The purpose of this paper is to quantify the effects of frequency and timing offsets in orthogonal frequency division multiplexing (OFDM) and single carrier systems and to compare their relative sensitivities. This is done in two ways. First, by simulation and second, by a numerical computation using a method first introduced by Beaulieu.
null Yeesoo Han, null Heon Huh, J.V. Krogmeier   +2 more
openaire   +1 more source

SC-FDE and OFDM in MISO Frequency-Selective Fading Channels

2020 30th International Conference Radioelektronika (RADIOELEKTRONIKA), 2020
This paper presents a new approach for evaluating the differences between SC-FDE and OFDM in MISO Clarke/Gans Rayleigh fading channel. At first, base-band models of SC and OFDM are elaborated and principles of STBC encoding and decoding are described in the MISO fading channel.
Radim Zedka, Tomás Gotthans, Roman Marsálek, Jiri Blumenstein, Marek Bobula   +4 more
openaire   +1 more source

SC/FDE, OFDM and CDMA: A Simplified Approach

2006 European Conference on Wireless Technologies, 2006
We apply code division multiple access CDMA to single carrier transmission with frequency domain equalization SCFDE. We use the Fourier spreading codes at the transmitter with length equal the number of users and across the active users. It leads to the cancellation of the despreading process together with the inverse fast Fourier transformation (IFFT)
T. Buzid, S. Reinhardt, M. Huemer
openaire   +1 more source

Timing of the FFT-Window in SC/FDE Systems

2004
In this work the positioning of the FFT-window in a single carrier system with frequency domain equalization (SC/FDE) is analyzed. Similar to OFDM (orthogonal frequency division multiplexing), SC/FDE systems are based on blockwise transmission and FFT processing, which enables channel equalization in the frequency domain with low complexity. Comparable
A. Koppler, M. Huemer, A. Springer, R. Weigel   +3 more
openaire   +1 more source

Physical layer security enhancement for cooperative SC-FDE systems

2016 8th International Conference on Wireless Communications & Signal Processing (WCSP), 2016
In this paper, a novel joint relay and destination selection scheme is proposed to enhance the secrecy performance in cooperative single carrier frequency domain equalization (SC-FDE) systems with multiple relays and multiple destinations in the present of a group of eavesdroppers.
Pan Yuan, Yunpeng Cheng, Weiwei Yang, Kaihua Wang, Heng Wang   +4 more
openaire   +1 more source

An efficient CP compensation for SC-FDE with insufficient CP symbols

IEEE Communications Letters, 2010
In this letter, we propose a method to mitigate interferences for single carrier frequency domain equalization (SC-FDE) with insufficient cyclic prefix (CP) symbols. The resultant channel matrices are not circulant due to some missing symbols. Unlike OFDM, however, the reconstruction of missing symbols using the estimated symbols is not effective.
Hankil Lee, Yusung Lee, Hyuncheol Park
openaire   +2 more sources

Cooperative Frequency-Domain Beamforming for Broadband SC-FDE Systems

2011 IEEE Global Telecommunications Conference - GLOBECOM 2011, 2011
In this work, we investigate cooperative frequency-domain beamforming (FD-BF) for single-carrier frequency-domain equalization (SC-FDE) systems. In particular, we propose optimal and suboptimal FD-BF schemes for frequency-domain linear equalization (FD-LE) and an idealized matched filter receiver.
Peiran Wu, Robert Schober
openaire   +1 more source

On the Compensation of IQ Imbalance in an SC/FDE System

2006
Robust communication concepts and/or synchronization algorithms represent one of the most important aspects for high rate wireless communication systems. In this work efficient concepts and algorithms for the estimation and compensation of IQ imbalance are developed.
C. Wicpalek, H. Witschnig, A. Springer
openaire   +1 more source

On OFDM and SC-FDE Transmissions in Millimeter Wave Channels with Beamforming

2016 IEEE 83rd Vehicular Technology Conference (VTC Spring), 2016
The air interface for millimeter wave (mmWave) communications must be designed by properly taking into account the specific characteristics of the wireless channel at higher frequencies. In this work, we start by considering a channel model recently proposed in the literature for mmWave communications in outdoor urban scenarios.
Meng Wu 0002, Dirk Wübben, Armin Dekorsy, Paolo Baracca, Volker Braun, Hardy Halbauer   +5 more
openaire   +1 more source