Name
Title | ||
|---|---|---|
Joint estimation of complex gain and fractional delay for Tx leakage compensation in FDD transceivers |
Abstract | ||
|---|---|---|
This paper deals with a joint estimation algorithm dedicated to the digital compensation of the Tx leakage in FDD transceivers. Such transceivers are affected from transmitter-receiver signal leakage. Combined with non linearity of components in the received path, it leads to a pollution in the baseband signal. The baseband polluting term depends on the equivalent Tx leakage channel, modeling leakages and the received path. In this paper we consider a first-order autoregressive model to approximate Tx-Leakage channel gain variations, and the presence of a fractional delay, modeling propagation effects. We first express asymptotic performance of a gain estimator based on a least-mean-square (LMS) approach in the synchronized case and then derive the influence of the fractional delay. We show that in practice, the fractional delay can not be neglected and we propose a joint estimation of the fractional delay and the cross-channel gain to perform the digital compensation. The proposed method is recursive, online and exhibits low complexity. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/ICECS.2014.7049926 | Electronics, Circuits and Systems |
Keywords | Field | DocType |
least mean squares methods,radio transceivers,signal processing,FDD transceivers,LMS approach,Tx leakage compensation,Tx-Leakage channel gain variation approximation,baseband signal,complex gain,digital compensation,fractional delay,joint estimation algorithm,least mean square approach,transmitter-receiver signal leakage,Digital Compensation,FDD transceiver,Joint Estimation,Least-Mean-Square algorithm,Tx Leakage | Autoregressive model,Baseband,Transceiver,Leakage (electronics),Control theory,Computer science,Communication channel,Electronic engineering,Complex gain,Recursion,Estimator | Conference |
Citations | PageRank | References |
2 | 0.40 | 6 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Robin Gerzaguet | 1 | 56 | 7.86 |
| Laurent Ros | 2 | 21 | 5.45 |
| Fabrice Belvèze | 3 | 2 | 0.40 |
| Jean-Marc Brossier | 4 | 162 | 18.37 |