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Performance Evaluation for UWB Signal Transmissions in the Distributed Multi-Cell Environment Using ROF Technology

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6 Author(s)
YongHoon Kim ; Department of Radio Engineering, Korea University, 1, 5 Ka, Anam-dong, Sungbuk-ku, Seoul, 136-701, Korea ; Sangil Kim ; Hodeok Jang ; Sub Hur
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We estimate the performance of ultra-wideband (UWB) signal transmissions for a multi-cell environment combined with a large virtual cell using radio-over-fiber (ROF) technologies. For a large virtual cell, UWB signal transmissions have been evaluated in the overlapped area between cells using a realistic channel model based on a modified Δ – k model. The effects of multipath interference and delay time at the overlapped area have been evaluated in terms of link margins and bit error rates using Rake receivers. Our simulation results suggest that the delay time of about 125ps significantly affects the link margin for PPM. The optimum peak-to-peak voltage (Vp-p) of Mach-Zehnder modulators (MZM) has been obtained to be 2.4V for the best link margin. Considering link margins, bite error rates (BER), and packet error rates (PER), the BPM modulation format has better performance than the PPM modulation format.

Published in:

Microwave Photonics, 2005. MWP 2005. International Topical Meeting on

Date of Conference:

12-14 Oct. 2005

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