Abstract:
The growing number of different mobile communications standards calls for inexpensive and highly flexible receiver architectures supporting these standards. The direct-co...Show MoreMetadata
Abstract:
The growing number of different mobile communications standards calls for inexpensive and highly flexible receiver architectures supporting these standards. The direct-conversion receiver is a very attractive candidate for reaching this goal. However, unavoidable imbalances between the I- and the Q-branch of the I/Q demodulator lead to a significant performance degradation at the reception of OFDM signals. The performance of a novel algorithm for the estimation and compensation of these effects is analyzed in this paper. The novel approach does not depend on any standard-specific signal components, such as pilots or a preamble. Instead, a blind I/Q imbalance parameter estimation is performed during the ordinary receive mode. Therefore, the algorithm is applicable to a wide range of present and future OFDM communications standards.
Published in: 2005 13th European Signal Processing Conference
Date of Conference: 04-08 September 2005
Date Added to IEEE Xplore: 06 April 2015
Print ISBN:978-160-4238-21-1
Conference Location: Antalya, Turkey