Topic
SC-FDE
About: SC-FDE is a research topic. Over the lifetime, 438 publications have been published within this topic receiving 7547 citations.
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15 May 2014TL;DR: This paper presents a new efficient key technology for space telemetry wireless data link: the low-complexity serially concatenated continuous phase modulation single carrier frequency domain equalization (SC-FDE) algorithm, which combines serial concatenation convolutional coding (SCCC) technology with Continuous phase modulation (CPM) technology, thus to effectively eliminate inter-symbol interference (ISI) and inter-channel interference (ICI).
Abstract: The technology for space telemetry wireless data link is a kind of key enabling technology in high-rate wireless special communication, whose performance directly affects the information transfer efficiency of the whole system. How to improve the space telemetry wireless data link technology, so as to increase the efficiency and reliability for data transmission, as well as to lower bit error rate (BER) has become a hot topic in the field of high-rate wireless special communication. Since the conventional methods have a relatively high computational complexity and a relatively low power and spectrum efficiency, in this paper, we present a new efficient key technology for space telemetry wireless data link: the low-complexity serially concatenated continuous phase modulation (SC-CPM) single carrier frequency domain equalization (SC-FDE) algorithm, which combines serial concatenated convolutional coding (SCCC) technology with continuous phase modulation (CPM) technology, thus to effectively eliminate inter-symbol interference (ISI) and inter-channel interference (ICI), and to achieve a more excellent performance than Turbo codes. What's more, the pilot frequency training word sequence is embedded in each data packet for rapid and accurate evaluation of the channel information parameters, and M-ary Laurent decomposition method is introduced for low complexity minimum mean square error (MMSE) frequency domain equalization (FDE). Simulation experiment results demonstrate that our method has a better robustness, bandwidth efficiency and data link performance than the conventional methods. Furthermore, the low-complexity SC-CPM SC-FDE algorithm also has an important guiding significance for researches on high-rate wireless special communication under the condition of dynamic and multipath.
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TL;DR: A novel iterative decision feedback equalizer for single-carrier FDE systems is proposed that enables evident performance improvement in terms of symbol error rate compared with conventional schemes under relative low sampling rate.
Abstract: This letter deals with frequency domain equalization (FDE) in the presence of residual timing offsets. A novel iterative decision feedback equalizer for single-carrier FDE systems is proposed. Different from conventional schemes based on explicit point time-delay estimates, the proposed scheme operates directly on the oversampled matched filter output. For each iteration, FDE is performed first, and based on which, joint posterior distribution of the channel and timing parameters is obtained. A set of weights obtained from the corresponding posterior distribution, rather than explicit point time-delay estimate, are utilized for the time-delay compensation, eliminating the need of fine timing synchronization. Simulation results show that the proposed scheme enables evident performance improvement in terms of symbol error rate compared with conventional schemes under relative low sampling rate.
1 citations
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01 Jan 2018
TL;DR: A single-carrier scheme with frequency domain equalization (SC-FDE) and a multiple-input multiple-output (MIMO) scheme are proposed and their basic performance in several scenarios with computer simulations are evaluated.
Abstract: We previously developed a high-definition (HD) wireless camera using millimeter waves with the orthogonal frequency division multiplexing (OFDM) scheme. Now, we are developing an 8K wireless camera that can achieve larger transmission capacity with a smaller transmitter. Considering this, we study a single-carrier scheme with frequency domain equalization (SC-FDE) and a multiple-input multiple-output (MIMO) scheme. The SC-FDE could achieve a smaller peak-to-average power ratio, resulting in a smaller power amplifier. In this paper, we propose two structures of 2×2MIMO SC-FDE and evaluate their basic performance in several scenarios with computer simulations.
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01 Oct 2016TL;DR: Analytical results indicate that the proposed joint relay and destination selection scheme can achieve better secrecy performance compared with that in previous work.
Abstract: 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. In particular, we derive the exact and asymptotic closed-form expressions for the secrecy outage probability (SOP) and the asymptotic results demonstrate that in sufficient high SNRs region of main channels, the achievable secrecy diversity gain is L 1 QK, i.e., the product of the channel tap L 1 , the number of destination nodes Q and the number of relay nodes K. Analytical results indicate that our proposed joint selection scheme can achieve better secrecy performance compared with that in previous work.
1 citations