Scalable pipeline analog-to-digital converter for UTRA-TDD mobile station receiver

Abstract

A new reconfigurable pipeline ADC has been proposed for a mobile terminal receiver that can drastically reduce power dissipation dependent on adjacent channel interference. The proposed design automatically scales the word length by monitoring the in-band and out-of-band powers. The new ADC performance was evaluated in a simulation UTRA-TDD environment because of the large near far problem caused by adjacent channel interference from adjacent mobiles and base stations. Results show that the reconfigurable architecture (ADC) can save up to of 75% power dissipation when compared to a fixed word length ADC of 16 bits. This will prolong talk and standby time in a mobile terminal.