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Characterization and Modeling of Wireless Channel Transitions

Rajendar, Susheel Kumar Bokdia
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1236895879

Abstract Details

2009, Master of Science (MS), Ohio University, Electrical Engineering (Engineering and Technology).
The thesis provides statistical characterization and modeling of wireless channel transitions in both indoor and outdoor environments based on narrowband and wideband measurements. We characterize delay dispersion characteristics of the wireless channel as it transits from a line of sight (LOS) to a non-line of sight (NLOS) region. For the narrowband indoor channel transition measurements, received power levels versus frequency were measured in the 900 MHz unlicensed ISM frequency band. The narrow band channel results quantify some fading characteristics versus frequency and distance, and we also estimate values for the “power correlation” bandwidth. The power correlation values of 0.5 were observed for bandwidths of approximately 7 MHz. For the wideband channel transition measurements, power delay profiles (PDP) were measured in indoor and outdoor environments in the 5 GHz frequency band. Several delay spread parameters - root mean square delay spread, delay window, and channel impulse response X, dB (CIRX,dB) duration - were obtained for LOS and NLOS regions from the measured PDPs, and we quantify example changes in these parameters due to the transition. As expected, the delay spread parameters for NLOS regions are larger than those for LOS regions. Root mean-square delay spreads were found to increase from approximately 9 ns to 18 ns in going from LOS to NLOS regions, respectively. Wideband channel models were also developed for both regions for a bandwidth of 50 MHz. The channel models define tap amplitude fading distributions and parameters, tap energies, and Markov tap persistence parameters.
David W Matolak (Advisor)
Jeffrey Dill (Committee Member)
Trent Skidmore (Committee Member)
Sergio Lopez (Committee Member)
161 p.
Electrical Engineering; Engineering; Technology
Channel Characterization; Channel Modeling; Channel Transitions; Wideband and Narrowband Channel; Wireless Communications; Line of Sight and Non Line of Sight

Recommended Citations

Citations

  • Rajendar, S. K. B. (2009). Characterization and Modeling of Wireless Channel Transitions [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1236895879

    APA Style (7th edition)

  • Rajendar, Susheel. Characterization and Modeling of Wireless Channel Transitions. 2009. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1236895879.

    MLA Style (8th edition)

  • Rajendar, Susheel. "Characterization and Modeling of Wireless Channel Transitions." Master's thesis, Ohio University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1236895879

    Chicago Manual of Style (17th edition)

ohiou1236895879
1,174
© 2009, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.