Packet size optimization for energy-efficient 2-hop and time diversity in Multipath Fading for wireless body area network | |
| Author | Nattakorn Promwongsa |
| Call Number | AIT Thesis no.TC-16-02 |
| Subject(s) | Body area networks (Electronics) Computer network protocols Wireless communication systems |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Telecommunications |
| Publisher | Asian Institute of Technology |
| Abstract | Recently, Wireless Body Area Network(WBAN) has drawn vast interests from researchers due to its high potential in healthcare and medical applications. In this thesis, we propose and analyse the energy efficiency models for 2-hop and time diversity communications in multipath fading modeled using Rician and Rayleigh distributions. In addition, the optimal packet size to maximize energy efficiency is investigated for on-body with line-ofsight(LOS) and non-line-of-sight(NLOS), and in-body channels. The modulation techniques for both coherent and differentially coherent detections are considered including binary phase shift keying (BPSK), 16-ary quadrature amplitude position modulation(QAPM), differential binary phase shift keying(DBPSK) and differential quadrature phase shift keying(DQPSK). The closed-form expressions of energy efficiency models of 1-hop, 2-hop, cooperative and time diversity communications in multipath fading are derived. We compare the numerical results of our proposed 2-hop and time diversity communications with the existing 1-hop and cooperative communications. The results show that for poor channel conditions, our proposed 2-hop communication provides the maximum energy efficiency. Moreover, if relay communication is not feasible, our proposed time diversity communication achieves the best performance when the number of diversity channels is 2. For time diversity communication, the energy efficiency cannot always be improved by increasing the number of diversity channels since the optimal number of diversity channels depends on S-D distance. Finally, it is obvious that 16-ary QAPM provides the maximum energy efficiency in in-body channel for all communication schemes except time diversity communication. However, BPSK provides the best performance in LOS and NLOS on-body channels for all communication schemes. |
| Year | 2016 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Telecommunications (TC) |
| Chairperson(s) | Teerapat Sanguankotchakorn; |
| Examination Committee(s) | Nakamura, Shinichi;Attaphongse Taparugssanagorn ; |
| Scholarship Donor(s) | HM King's Scholarships;Queen's Scholarships ; |
| Degree | Thesis (M.Eng.) -- Asian Insitute of Technology, 2016 |