Title :
A 85 Mbps low-power DQPSK modem-LSI for advanced wireless access
Author :
Yamagishi, Akihiro ; Muraguchi, Masahiro ; Tsukahara, Tsuneo
Author_Institution :
NTT Syst. Electron. Labs., Kanagawa, Japan
Abstract :
A new differential quadrature phase shift keying modem-LSI uses differential mapping for modulation and baseband delay detector logic for demodulation. The LSI achieves a maximum bit rate of over 85 Mbps and low power dissipation of 67 mW at 80 Mbps with a 3-V power supply. We built an intermediate-frequency (IF)-part test circuit composed of the new modem-LSI, and did a transmission test at IF return. The C/N degradation of this circuit is about 1.7 dB at 75 Mbps
Keywords :
CMOS integrated circuits; differential detection; differential phase shift keying; large scale integration; modems; quadrature phase shift keying; telecommunication equipment testing; 85 Mbit/s; IF return; advanced wireless access; baseband delay detector logic; circuit C/N degradation; demodulation; differential mapping; differential quadrature phase shift keying; intermediate-frequency-part test circuit; low power dissipation; low-power DQPSK modem-LSI; modulation; transmission test; Baseband; Circuit testing; Delay; Demodulation; Detectors; Differential quadrature phase shift keying; Large scale integration; Logic; Phase detection; Phase modulation;
Conference_Titel :
Radio and Wireless Conference, 1998. RAWCON 98. 1998 IEEE
Conference_Location :
Colorado Springs, CO
Print_ISBN :
0-7803-4988-1
DOI :
10.1109/RAWCON.1998.709153
