Analysis and Compensation of Receiver Non-Idealities in Wireless OFDM Transceivers

Abstract

High rate wireless communication systems require the design of low-cost radio transceivers with low power consumption. Various architectures for the down conversion of the radio frequency signal to baseband exist. But, with varying degrees, all radio receivers introduce certain non-ideal characteristics of their own, including DC offset, IQ mismatch, frequency offset and phase noise. In this paper, the impact of such non-ideal receiver effects on the performance of an OFDM wireless communication system are investigated. Techniques for compensation or mitigation of such phenomena are discussed and novel methods are proposed.