Paper Info
Title
Multiband simultaneous reception front-end with adaptive mismatches correction algorithm
Abstract
This paper addresses the architecture of multistandard simultaneous reception receivers and aims at improving the performance-power-complexity trade-off of the front-end. To this end we propose a single front-end architecture offering lower complexity and therefore lower power consumption. In order to obtain the same performance as the state of the art receivers, a light weight adaptive method is designed and implemented. It uses a mix of two digital implemented algorithms dedicated to the correction of the front- end IQ mismatches. A study case concerning the simultaneous reception of 802.11g and UMTS signals is developed in this article. In order to mitigate the influence of the IQ mismatches on the reception quality of the useful signal, an adaptive digital algorithm was developed. This method is context-aware and is based on a mix between an iterative light weight algorithm and a more complex SMI (8) (Single Matrix Inversion) algorithm. By mixing these two methods, we take advantage of the low consumption of the LMS (Least Mean Squares) iterative algorithm (9) and of the fast convergence characteristics of the more power greedy SMI. The results show a perfect mitigation of the effects of the IQ mismatches by the adaptive algorithm. In other words, when integrating this algorithm, the proposed architecture has the same performance as the font-end stack-up. This paper is composed of three parts. Following this introduction, section II describes the double IQ multistandard front-end architecture. Section III details the IQ mismatches and their impact on the quality of reception when using a double IQ front-end architecture. It is also dedicated to the implementation of the adaptive mismatches correction algorithm and to the results of the entire multiband simultaneous reception structure. Finally, conclusions of this study are drawn.
Year
DOI
Venue
2009
10.1109/PIMRC.2009.5450258
PIMRC
Keywords
Field
DocType
3G mobile communication,diversity reception,UMTS signals,adaptive mismatches correction algorithm,digital implemented algorithms,front-end IQ mismatches,light weight adaptive method,multiband simultaneous reception front-end,multistandard simultaneous reception receivers,performance-power-complexity trade-off,adaptive systems,least mean square methods,multistandard simultaneous reception
Front and back ends,Architecture,Correction algorithm,UMTS frequency bands,Adaptive method,Adaptive system,Computer science,Real-time computing,Wireless lan,Power consumption
Conference
Citations 
PageRank 
References 
2
0.41
3
Authors
3
Name
Order
Citations
PageRank
Ioan Burciu141.58
Guillaume Villemaud28415.57
Jacques Verdier3185.46