Power Amplifier Linearization in Broadband Wireless Communication

ISBN-13: 9783845437347 / Angielski / Miękka / 100 str.

Somayeh Mohammady

Opis

The purpose of the Power Amplifier is to boost the radio signal to a sufficient power level for transmission through the air interface from the transmitter to the receiver. It involves solving several contradicting requirements, which are such as linearity and efficiency. Unfortunately, these requirements tend to be mutually exclusive, so that any improvement in linearity is usually achieved at the expense of efficiency, and vice versa. In this book, the adaptive digital predistortion technique has been studied and compared with other techniques. The predistortion circuit inversely models the amplifier's gain and phase characteristics and, when combined with the amplifier, produces an overall system that is more linear and reduces the amplifier's distortion.

O autorze

She was born in Shemiran, Tehran, Iran in 1982. She got her bachelor's degree in EE in 1999 at Azad university of Iran in Naein. Her topic was about line follower robot. she joined University Putra Malaysia for her Master in EE and continued to PhD until 2012. Her works were about PA linearization is GSM systems and PAPR reduction in OFDM systems.