Title :
An all-digital CMOS WDMA UWB transmitter with 10pJ/pulse 200Mbit/s
Author :
TingJun Liang ; MingJian Zhao ; Zhaohui Wu ; Bin Li
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
A multi-access ultra-wideband (UWB) transmitter with waveform division multiple access (WDMA) mode is proposed for 3-5GHz applications. WDMA divides different users by controlling the combination of two orthogonal waveforms according to pseudo random code. A low-power all-digital mode is employed to implement the couple of orthogonal Gaussian pulses to achieve high spectrum efficiency under the FCC limitation floor. The proposed transmitter with data modulation circuit was designed by 180nm CMOS process. Simulation results show that the transmitted signal has an amplitude of 500mV and a bandwidth of 3-5GHz, consuming 10pJ/pulse at a baseband data rate of 200Mbit/s.
Keywords :
CMOS digital integrated circuits; code division multiple access; radio transmitters; random codes; ultra wideband technology; CMOS process; FCC limitation floor; all-digital CMOS WDMA UWB transmitter; bandwidth 3 GHz to 5 GHz; baseband data rate; bit rate 200 Mbit/s; data modulation circuit; low-power all-digital mode; multiaccess ultrawideband transmitter; orthogonal Gaussian pulses; orthogonal waveforms; pseudorandom code; size 180 nm; spectrum efficiency; voltage 500 mV; waveform division multiple access mode; FCC; Nickel; Gaussian pulses; UWB; WDMA; multi-access;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2013 IEEE International Conference of
Conference_Location :
Hong Kong
DOI :
10.1109/EDSSC.2013.6628212
