Channel Measurements and Transmission Simulation for Taiwan High Speed Rail Wireless Communication
Date Issued
2009
Date
2009
Author(s)
Yeh, Chung-Ying
Abstract
The important factor of the wireless communication is the channel characteristic. Conventionally, channel characteristic can be fully investigated by channel sounder, e.g., PDP (Power delay profile), CFR (Channel frequency response), and DS (Doppler spectrum). Due to several associated equipments, channel sounder has almost perfect synchronization between transmitter (TX) and receiver (RX), and capability to detect PDP, CFR, DS and AOA (angle of arrival) of transmit signal by antenna array. n this thesis we make use of the orthogonal frequency division multiplexing technique (OFDM) and present an OFDM-based channel measurement system and demonstrate results measured in Taiwan High Speed Rail (THSR) environments. The system model and used equipments will be shown up. We focus the data analysis on the path loss, delay profile, bits error rate (BER), DS. The measured results are compared with simulation. For the communication system, BER and throughput are two major factors that affect the system performance. We consider the actual condition of WiMAX to develop the simulation scenario. The simulation result can contribute to the THSR wireless communication system.
Subjects
OFDM
Channel Measurement
Taiwan High Speed Rail
Tunnel
Radio over Fiber
Channel Modeling
Propagation Loss
Doppler Spectrum
Type
thesis
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