IQ Calibration Techniques for CMOS Radio Transceivers (Analog Circuits and Signal Processing) by Sao-Jie Chen (Repost)
Publisher: Springer; 1 edition (September 22, 2006) | ISBN: 1402050828 | Pages: 90 | PDF | 8.39 MB
The 802.11n wireless standard uses 64-state quadrature amplitude modulation (64-QAM) to achieve higher spectral efficiency. Consequently, the transmitter and receiver require a higher signal to noise ratio with the same level of error rate performance. This book offers a fully-analog compensation technique without baseband circuitry to control the calibration process. Using an 802.11g transceiver design as an example, it describes in detail an auto-calibration mechanism for I/Q gains and phases imbalance.