Name
Abstract | ||
|---|---|---|
Due to its architectural simplicity, the direct conversion scheme is attractive for low-cost, low-complexity and/or reconfigurable transceiver design. Unfortunately, this scheme comes with moderate performance due to its sensitivity to circuit impairments such as transmitter and receiver quadrature imbalance, carrier feedthrough and receiver dc-offset. In this paper, a calibration method is presented to estimate and compensate for these circuit impairments such that their distortions at the transmitter and receiver output are eliminated. The proposed method is noniterative and enables calibration during normal transmit operation. The calibration is directly applicable on most direct-conversion transceivers embedding two frequency synthesizers as the increase of complexity is concentrated in the digital domain only. The performance has been evaluated based on measurements of three different systems operating on frequencies corresponding to major wireless interface standards, namely WLAN, WiMAX, WiFi, DVB-T/H, and even 60-GHz multi-gigabit wireless. The calibration improved the system performance significantly, exceeding standard compliancy. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/JSTSP.2009.2020564 | Selected Topics in Signal Processing, IEEE Journal of |
Keywords | Field | DocType |
calibration,circuit complexity,frequency synthesizers,transceivers,calibration,carrier feedthrough,circuit impairments,direct-conversion transceivers,normal transmit operation,quadrature imbalance,receiver dc-offset,reconfigurable transceiver design,two frequency synthesizers,wireless interface standards,Calibration,circuit impairments,direct-conversion transceiver,implementation,measurements | Transmitter,Transceiver,Wireless,Computer science,Electronic engineering,Artificial intelligence,Wireless network interface controller,Feedthrough,Computer vision,Circuit complexity,WiMAX,Orthogonal frequency-division multiplexing,Embedded system | Journal |
Volume | Issue | ISSN |
3 | 3 | 1932-4553 |
Citations | PageRank | References |
12 | 0.97 | 6 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Björn Debaillie | 1 | 124 | 19.27 |
| van Wesemael, P. | 2 | 16 | 2.78 |
| Vandersteen, G. | 3 | 72 | 17.97 |
| Jan Craninckx | 4 | 756 | 181.43 |