Performance analysis of QAM for L-MRC receiver with estimation error over independent Hoyt fading channels
| Autor: | Dimpee Das, Rupaban Subadar |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Signal processing
Computer science Estimator 020206 networking & telecommunications 02 engineering and technology QAM 03 medical and health sciences 0302 clinical medicine 0202 electrical engineering electronic engineering information engineering Bit error rate Maximal-ratio combining Fading Electrical and Electronic Engineering Algorithm 030217 neurology & neurosurgery Quadrature amplitude modulation Computer Science::Information Theory Communication channel |
| Zdroj: | AEU - International Journal of Electronics and Communications. 107:15-20 |
| ISSN: | 1434-8411 |
| DOI: | 10.1016/j.aeue.2019.05.005 |
| Popis: | In modern wireless communication, smart receivers are used to overcome the effect of fading and includes the estimation of the channels as a part of its signal processing. From a theoretical point of view these type of receivers offer high grade performance, however from practical point of view the performance depends on the accuracy of the estimation of channels. In real practice, ideal channel estimator is very difficult, which leads to some estimation error in both phase and envelope of the estimated channels information. In this paper, a general expression for average bit error rate (ABER) has been presented for arbitrary branch Maximal Ratio Combining (MRC) while taking an Imperfect Channel Estimation (ICE) into consideration over independent Hoyt fading channels. The expression is formulated for M-ary Quadrature Amplitude Modulation (QAM) scheme. The degradation in the receiver operation due to this error estimation has been analyzed in this paper by numerical evaluation of the obtained expressions. From our analysis we have observed that the envelope estimation error is much critical from the receiver performance point of view. |
| Databáze: | OpenAIRE |
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