Performance Analysis of MRT and OT MIMO Systems in Macro/Micro Cell Environments
| Autor: | Ya-Chen Chiang, 江亞宸 |
|---|---|
| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 This thesis presents the performance analysis of optimum transmission (OT) and maximum-ratio transmission (MRT) for multiple-input/multiple-output (MIMO) systems subject to cochannel interference (CCI) in micro/macro cellular mobile radio environments. We consider quadrature amplitude modulation (QAM) transmission operating over a flat fading channel. Our analysis accounts for pulse waveform and modulation of the desired signal as well as CCI. The precise CCI model, which takes into account the random symbol timing offset between the desired signal and CCI, is used in our analysis. The effect of this offset might result in intersymbol interference (ISI) even in a flat fading environment and was usually neglected by previous studies. In order to obtain the accurate results efficiently, the average error rate for each Mote-Caro simulation run is calculated by using Gaussian Quadrature Rule (GQR), which can approximate the probability density function (pdf) of CCI and ISI. A Gaussian interference model is also provided for a comparison with the precise interference model in the MRT based MIMO system. The results of this study are expected to lead to a better understanding of the effects of interference, and then to optimize spectrum reuse and coverage in a MIMO system. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
|