Multihop wireless communications channels
John S. Boyer · 2001
This thesis presents theoretical characterizations and analysis for the physical layer of multihop wireless communications channels. Four channel models are proposed and developed: the decoded relaying multihop channel, the amplified relaying multihop channel, the decoded relaying multihop diversity channel, and the amplified relaying multihop diversity channel. Two classifications are discussed: decoded relaying versus amplified relaying and multihop channels versus multihop diversity channels. The concepts of multihop diversity and multiroute diversity are defined and analyzed. The channel models are compared, through analysis and simulations, with the singlehop reference channel on the basis of signal to noise ratio, probability of outage, probability of error, and optimal power distribution. Each of the four channel models is shown to outperform the singlehop reference channel. Multihop diversity channels are shown to outperform multihop channels. Amplified relaying is shown to outperform decoded relaying despite noise propagation. Finally, a number of implementation considerations are introduced and discussed. iii Acknowledgements First and foremost, I acknowledge Jesus Christ as my Lord, and thank Him for giving me the opportunity to write this thesis. I am also especially grateful to my thesis