Evaluating and mitigating the impact of nonlinearity power amplifiers on 60 GHz wireless communications | |
| Author | Peerawat Methasupphasan |
| Call Number | AIT Thesis no.ICT-14-05 |
| Subject(s) | Millimeter waves--Data processing Amplitude modulation Wireless communications systems |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Information & Communication Technologies, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ICT-14-05 |
| Abstract | The millimeter wave frequency bands are proposed to be the extremely high data rate and capacity of wireless networks, because there is an abundant demand of using high speed applications such as real-time applications and streaming media. One of the millimeter wave frequency band is 60 GHz frequency band, which has the extremely high bandwidth is about 7 GHz. Moreover, 60 GHz frequency band is an unlicensed band in most of the countries, so the implementations and deployments of the 60 GHz application technologies can be existed in everywhere. However, 60 GHz frequency band has a high atmospheric attenuation, so this frequency band has a short distance communication over tens meter. There is another reason of frequency distortion of 60 GHz wireless communications is the nonlinearity of high power amplifier (HPA) with memory effects, which causes the signal degradations such as amplitude and phase distortion, I/Q imbalance and intermodulation distortion, so the information data cannot be correctly retrieved. Hence, the nonlinear power amplifier with memory effects should be significantly considered. In this study, the nonlinear power amplifier with memory effects will be investigated by using the nonlinearity power amplifier model as second-order Volterra series expansion with the simulation program, and the output of the nonlinear power amplifier is evaluated in term of error vector magnitude (EVM). After that, the nonlinearity of HPA with memory effects will be mitigated by using the particle filtering which is the proposed mitigation technique for retrieving the input as Marray quadrature amplitude modulation (QAM) schemes. |
| Year | 2014 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ICT-14-05 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Information and Communications Technologies (DICT) |
| Academic Program/FoS | Information and Communication Technology (ICT) |
| Chairperson(s) | Teerapat Sanguankotchakorn; |
| Examination Committee(s) | Poompat Saengudomlert;Attaphongse Taparugssanagorn; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2014 |