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IEEE Journal of Lightwave Technology
Volume 18 Number 10, October 2000

Table of Contents for this issue

Complete paper in PDF format

Millimeter-Wave Broad-Band Fiber-Wireless System Incorporating Baseband Data Transmission over Fiber and Remote LO Delivery

Christina Lim, Member, IEEE Ampalavanapillai Nirmalathas, Member, IEEE Dalma Novak, Member, IEEE Rod Waterhouse, Member, IEEE and Gideon Yoffe

Page 1355.

Abstract:

We present the first demonstration of a millimeter-wave (mm-wave) broadband fiber-wireless system which incorporates baseband data transmission in both the downstream (622 Mb/s) and upstream (155 Mb/s) directions. The local oscillator (LO) required at the remote antenna base station for up-and downconversion to/from the mm-wave radio frequency (RF) is delivered remotely via a modulation scheme that is tolerant to the effects of fiber chromatic dispersion on the detected LO carrier power. The technique employs a single dual-electrode modulator located at the central office (CO) and the data and an RF signal at a frequency equal to half the LO frequency, are applied simultaneously to the device. The modulation scheme was optimized as a function of the modulator operating conditions. Simultaneous bidirectional radio transmission in the mm-wave fiber-wireless network was implemented using specially designed mm-wave diplexers located at the base station (BS) and customer unit, and a single Ka-band printed antenna array at the BS operating simultaneously in transmit and receive mode. Error-free data transmission was demonstrated for both down-(34.8 GHz) and uplinks (37.5 GHz) after 20 km of single-mode optical fiber and a bit error rate (BER) of 10-6 was achieved after the inclusion of a 2-m radio link.

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