| Paper: | SPCOM-P12.12 | ||
| Session: | Detection, Estimation, and Demodulation | ||
| Time: | Friday, May 21, 13:00 - 15:00 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing for Communications: Modulations and Systems | ||
| Title: | ADAPTIVE COMPENSATION OF GAIN/PHASE IMBALANCES AND DC-OFFSETS USING CONSTANT MODULUS ALGORITHM | ||
| Authors: | Zhiwen Zhu; Communications Research Centre | ||
| Xinping Huang; Communications Research Centre | |||
| Abstract: | A novel technique based on the constant modulus algorithm (CMA) is proposed to compensate the gain/phase imbalances and DC-offsets in a transceiver. The algorithm is first described when implemented in the transmitter to compensate its circuit distortions. It is shown that the gain/phase imbalances and DC-offsets of the modulator can be corrected even in presence of high noise level. The symbol error rate (SER) performance approaches that of a system without imperfection. In the second approach, the CMA algorithm is implemented at the receiver to compensate the receiver distortions and also the transmitter ones. It is shown that the algorithm compensates for most of the receiver distortions and partly the transmitter ones. | ||
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