Double Layer Ultra-Broadband Finite State Markov Channel

• Main Author: 楊博鈞
• Other Authors: Jai-Chyi Wu
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/35803137432768487308

碩士 === 國立臺灣海洋大學 === 通訊與導航工程系 === 96 === The objective of this study is to find an effective algorithm to build and model the broadband fading channel. For broadband or even ultra-broadband fading channels in the wireless communication system, we will not be able to describe them by a conventional channel model algorithm. There are block fading effects both in time and in frequency when the channel is considered to be a broadband fading channel. The uniform signal over time and frequency in the ultra-broadband channel does not achieve good channel utilization; we shall adopt bandwidth scaling to offer a suitable bandwidth range by combining the upper and lower channel capacity bounds to decide how large should be the bandwidth. Applying bandwidth scaling scheme twice for a very large bandwidth on ultra-broadband fading channels, we then be able to describe each bandwidth scaled broadband fading channel by a finite-state Markov channel (FSMC) model. We have discussed the transition probability and steady state probability of each state. By partition the range of the received signal-to-noise ratio (SNR) into a finite number of intervals, the finite-state Markov channel model can be applied to construct broadband Rayleigh fading channels as well as others broadband fading channels