Joint adaptive modulation and predistortion for nonlinear time-varying channels

Autor:	Mohamed Ibnkahla, H. Alasady
Rok vydání:	2007
Předmět:	Transmission (telecommunications) Control theory Computer science Modulation Amplifier Bit error rate Link adaptation Spectral efficiency Predistortion Quadrature amplitude modulation
Zdroj:	ISSPA
DOI:	10.1109/isspa.2007.4555357
Popis:	This paper proposes a simple joint adaptive modulation and predistortion scheme over nonlinear time-varying channels equipped with High Power Amplifiers (HPAs). The paper includes the probability of Bit Error Rate (BER) analysis of MQAM transmission over nonlinear channels, which is the key factor in designing adaptive modulation. The paper includes performance comparison of adaptive modulation over nonlinear channels with and without predistortion, for different normalized Doppler frequencies. The analysis is supported with simulation results. Results show that the combined adaptive modulation with predistortion technique significantly improves the spectral efficiency.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::67c838958bc691775d21dc53592c6840 https://doi.org/10.1109/isspa.2007.4555357 Zobrazit plný text záznamu