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Conference Paper
Implementation of a Digital IF Transceiver for SDR-based WiMAX base Station
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- Authors
- Bong Guk Yu, Jin Up Kim, Sung Woong Ra
- Issue Date
- 2006-11
- Citation
- SDR Technical Conference 2006, pp.1-6
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper presents the implementation and performance of a Software Defined Radio (SDR) technology-based-Digital Intermediate Frequency (IF) transceiver for IEEE 802.16d standard, often referred to as a WiMAX (Worldwide Interoperability for Microwave Access) base station. The implemented Digital IF transceiver is reconfigurable to three bandwidth profiles : 1.75MHz, 3.5MHz, and 7MHz each incorporating the IEEE 802.16d WiMAX standard. This transceiver can be reconfigured to other WiMAX profiles through software downloaded onto identical hardware platforms, without changing any components or parts on board. Experimental results are presented that show the performance of the designed Digital IF transceiver using an undersampling scheme, which is closely related to the sampling clock jitter characteristics. The experimental results show that the Error Vector Magnitude (EVM) value of the downlink IF output signal for Clock I, with a phase noise of -91.1 dBc/Hz decreased by 13.7 dB more than that of Clock III, with a phase noise of -118 dBc/Hz, the result being unrelated to the WiMAX profile that was operating.
- KSP Keywords
- IEEE 802.1, Intermediate frequency, Sampling clock, Software Defined Radio(SDR), WiMAX standard, base station(BS), clock jitter, digital IF, error vector magnitude, phase noise, worldwide interoperability for microwave access(WiMAX)