An all-digital phase-frequency tunable clock generator for wireless OFDM communications systems

Jui-Yuan Yu, Juinn-Ting Chen, Mei-Hui Yang, Ching-Che Chung, Chen-Yi Lee
2007 2007 IEEE International SOC Conference  
An all-digital clock generator is designed to enable the clock phase and frequency tuning dynamically during the wireless communications system is in operation. This phase-frequency tunable clock generator (PFTCG) provides 8 clock phases for selection and enables the ADC circuits sampling signals with lower frequency and better sampling phase, resulting in lower power consumption. The PFTCG provides the frequency tuning range ±150ppm centered at 5MHz, resulting in high performance due to
more » ... mance due to smaller sampling clock offset. This PFTCG is simulated under the wireless body area network system, and shows a 6.3dB SNR improvement at BER=1e -3 , and the hardware is simulated with power 77.56µW in the standard process 90nm CMOS technology.
doi:10.1109/socc.2007.4545480 dblp:conf/socc/YuCYCL07 fatcat:vias25lejzglvjfsdlqpyd5ggi