Title :
Wireless LANs with DPSK
Author :
Law, C.L. ; Do, M.A. ; Rahardja, Susanto
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
This paper investigates the performance of an indoor wireless communication system using differential phase shift keying (DPSK) modulation. The intermittence of a 1.95 GHz radio channel is examined by monitoring the bit error rate (BER) performance of the system in a teaching laboratory. The data rate is 10 Mbits/s. `Dead zones´ in the laboratory are confirmed to be caused by the multipath effect. The number of dead zones is greatly reduced as the antenna are repositioned so that the first Fresnel zone of the link is unobstructed. The experiments are conducted with manual control of the transmitted power. Consequently, it is necessary to implement the feedforward automatic gain control at the IF stage of the receiver
Keywords :
Fresnel diffraction; UHF radio propagation; automatic gain control; calibration; differential phase shift keying; error statistics; feedforward; indoor radio; mobile antennas; multipath channels; performance evaluation; power control; superheterodyne receivers; telecommunication control; transceivers; wireless LAN; 1.95 GHz; 10 Mbit/s; DPSK; Fresnel zone; UHF; bit error rate; dead zones; differential phase shift keying; feedforward automatic gain control; indoor wireless communication system; intermittence; multipath; radio channel; wireless LAN; Bit error rate; Differential phase shift keying; Differential quadrature phase shift keying; Education; Fresnel reflection; Laboratories; Monitoring; Phase modulation; Wireless LAN; Wireless communication;
Conference_Titel :
Networks, 1993. International Conference on Information Engineering '93. 'Communications and Networks for the Year 2000', Proceedings of IEEE Singapore International Conference on
Print_ISBN :
0-7803-1445-X
DOI :
10.1109/SICON.1993.515779
