Abstract
This paper proposes a simple frequency domain joint transmitter and receiver I/Q imbalance estimation method which exploits the phase rotation introduced by carrier frequency offset. Using two frequency domain training sequences inserted in each transmission frame, the transmitter and receiver I/Q imbalances can be jointly estimated over multiple frames. The transmitter I/Q imbalance parameter can be fed back to the transmitter for I/Q imbalance pre-compensation, whereas the receiver I/Q imbalance can be compensated locally followed by conventional frequency domain equalization. Numerical simulation results show that the image rejection ratios for both transmitter and receiver after I/Q imbalance compensation can be improved to over 50 dB which is necessary for multichannel systems with high order modulation and wide transmission bandwidth.
| Original language | English |
|---|---|
| Title of host publication | 2015 15th International Symposium on Communications and Information Technologies, ISCIT 2015 |
| Place of Publication | Piscataway, NJ |
| Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| Pages | 209-212 |
| Number of pages | 4 |
| ISBN (Electronic) | 9781467368209 |
| DOIs | |
| Publication status | Published - 22 Apr 2016 |
| Externally published | Yes |
| Event | 15th International Symposium on Communications and Information Technologies, ISCIT 2015 - Nara, Japan Duration: 7 Oct 2015 → 9 Oct 2015 |
Other
| Other | 15th International Symposium on Communications and Information Technologies, ISCIT 2015 |
|---|---|
| Country/Territory | Japan |
| City | Nara |
| Period | 7/10/15 → 9/10/15 |
Keywords
- carrier frequency offset
- I/Q imbalance
- image rejection
- multichannel system
- spectral efficiency
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