Samenvatting
The influence, digital estimation and compensation of IQ mismatch at both transmitter (TX) and receiver (RX) side of a direct-conversion based multiple antenna OFDM system are presented in this paper. The resulting IQ imbalance can be split into a frequency independent and a frequency selective part. For estimation and compensation a two-step approach is presented, combining a data-aided and decision directed approach. First the frequency independent IQ imbalance is estimated using a preamble and, subsequently, the frequency selective IQ imbalance is removed using adaptive filtering. A numerical performance analysis reveals that the presented approach effectively mitigates the influence of IQ mismatch in OFDM-based space division multiplexing systems experiencing both TX and RX IQ imbalance.
| Originele taal-2 | Engels |
|---|---|
| Titel | Proceedings IEEE International Conference on Communications (ICC 2006), June 11-15, 2006, Istanbul, Turkey |
| Uitgeverij | Institute of Electrical and Electronics Engineers |
| Status | Gepubliceerd - 2006 |
| Evenement | 2006 IEEE International Conference on Communications (ICC 2006) - Istanbul, Turkije Duur: 11 jun. 2006 → 15 jun. 2006 |
Congres
| Congres | 2006 IEEE International Conference on Communications (ICC 2006) |
|---|---|
| Verkorte titel | ICC 2006 |
| Land/Regio | Turkije |
| Stad | Istanbul |
| Periode | 11/06/06 → 15/06/06 |
| Ander | ICC 2006 |