5 research outputs found
Performance of a Multiple-Access DCSK-CC System over Nakagami- Fading Channels
In this paper, we propose a novel cooperative scheme to enhance the
performance of multiple-access (MA) differential-chaos-shift-keying (DCSK)
systems. We provide the bit-error-rate (BER) performance and throughput
analyses for the new system with a decode-and-forward (DF) protocol over
Nakagami- fading channels. Our simulated results not only show that this
system significantly improves the BER performance as compared to the existing
DCSK non-cooperative (DCSK-NC) system and the multiple-input multiple-output
DCSK (MIMO-DCSK) system, but also verify the theoretical analyses. Furthermore,
we show that the throughput of this system approximately equals that of the
DCSK-NC system, both of which have prominent improvements over the MIMO-DCSK
system. We thus believe that the proposed system can be a good framework for
chaos-modulation-based wireless communications.Comment: 4 pages, 5 figures, accepted, IEEE ISCAS, 201
Multi-User Multi-Carrier Differential Chaos Shift Keying Communication System
In this paper, a multi user Multi-Carrier Differential Chaos Shift Keying
(MC-DCSK) modulation is presented. The system endeavors to provide a good
trade-off between robustness, energy efficiency and high data rate, while still
being simple. In this architecture of MC-DCSK system, for each user, chaotic
reference sequence is transmitted over a predefined subcarrier frequency.
Multiple modulated data streams are transmitted over the remaining subcarriers
allocated for each user. This transmitter structure saves energy and increases
the spectral efficiency of the conventional DCSK system.Comment: Accepted in the IEEE International Wireless Communications and Mobile
Computing Conference (IWCMC 2013
Performance of a multiple-access DCSK-CC system over Nakagami-m fading channels
Conference Name:2013 IEEE International Symposium on Circuits and Systems, ISCAS 2013. Conference Address: Beijing, China. Time:May 19, 2013 - May 23, 2013.Peking University; Tsinghua University; National Natural Science Foundation of China; Broadcom; Microsoft Research AsiaIn this paper1, we propose a novel cooperative scheme to enhance the performance of multiple-access (MA) differential-chaos-shift-keying (DCSK) systems. We provide the bit-error-rate (BER) performance and throughput analyses for the new system with a decode-and-forward (DF) protocol over Nakagami-m fading channels. Our simulated results not only show that this system significantly improves the BER performance as compared to the existing DCSK non-cooperative (DCSK-NC) system and the multiple-input multiple-output DCSK (MIMO-DCSK) system, but also verify the theoretical analyses. Furthermore, we show that the throughput of this system approximately equals that of the DCSK-NC system, both of which have prominent improvements over the MIMO-DCSK system. We thus believe that the proposed system can be a good framework for chaos-modulation-based wireless communications. ? 2013 IEEE