360785 EVALUATION OF CDMA-QAM RAIL TRANSMISSION DEVICE FOR RAILWAY SIGNALING(Signal,Technical Session)

Hiroshi Mochizuki,Sei Takahashi,Hideo Nakamura,Satoshi Nishida,Ryo Ishikawa

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH（2009）

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摘要

To realize high-speed data transmission for railway signaling systems, we propose a novel modulation method combining code-division multiple access (CDMA) and quadrature amplitude modulation (QAM), called the CDMA-QAM method. We evaluated the effectiveness of the proposed method and developed a CDMA-QAM rail transmission system based on DSPs and an FPGA. In addition, we conducted a field trial using an actual rail.

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关键词

railway,transmission,signalingsignaltechnical,cdma-qam

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