naa a22 4500 510792227 CHVBK 20180411083323.0 cr unu---uuuuu 180411e20130801xx s 000 0 eng 10.1007/s11277-012-0992-9 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0992-9 Throughput Analysis of DS CDMA/Unslotted ALOHA Wireless Networks with Fixed Packet Length in Rayleigh Fading Finite-State Markov Channel Model [Elektronische Daten] [Shu-Ming Tseng, Hung-Pin Lin, Chih-Hao Chen, Yung-Chung Wang] We propose the finite-state Markov channel (FSMC) model to the throughput analysis of DS CDMA/unslotted ALOHA wireless networks in the mobile environment. The FSMC model can characterize the correlation structure of Rayleigh fading process, and the degree of correlation depends on the Doppler frequency shift. The FSMC model is suited to the throughput analysis by queueing theory due to its Markov chain nature. The previous papers in DS CDMA/unslotted ALOHA wireless networks in Rayleigh fading consider a whole packet. They ignore that the channel gain or multiple access interference can change symbol-to-symbol. In our proposed analysis, both the channel gain and multiple access interference can change from symbol to symbol. It is not just a packet-level analysis in the previous papers, and is a more general symbol-level analysis. Our generalized scheme should be more suited to realistic Rayleigh fading in the mobile environment. We consider two cases: (1) the system without carrier load sensing protocol (CLSP) and (2) systems with CLSP. For both cases, we analyze the theoretical throughput by queueing theory for various averaged signal-to-noise ratios and Doppler frequency shifts, and the computer simulated throughput matches the theoretical throughput. Springer Science+Business Media New York, 2013 Finite-state Markov channel (FSMC) nationallicence Unslotted ALOHA nationallicence Code-division multiple access nationallicence Throughput analysis nationallicence Doppler frequency shift nationallicence Queueing theory nationallicence Tseng Shu-Ming Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan aut Lin Hung-Pin Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan aut Chen Chih-Hao Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan aut Wang Yung-Chung Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 3091-3104 0929-6212 71:4<3091 2013 71 11277 https://doi.org/10.1007/s11277-012-0992-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0992-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tseng Shu-Ming Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan aut NATIONALLICENCE 700 1- Lin Hung-Pin Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan aut NATIONALLICENCE 700 1- Chen Chih-Hao Department of Electronic Engineering, National Taipei University of Technology, Taipei, Taiwan aut NATIONALLICENCE 700 1- Wang Yung-Chung Department of Electrical Engineering, National Taipei University of Technology, Taipei, Taiwan aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/4(2013-08-01), 3091-3104 0929-6212 71:4<3091 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer