Abstract
AbstractThis paper considers the concept of an MSCS (metastable information communications system) for remote transmission of measured data with gradual variations of the transmission frame cycle and proposes a signal integration method for improvement of the transmission characteristics. Based on the proposed method, a signal integration algorithm for a system remotely transmitting measured sensor data from on board a moving body is derived. An improvement of the received SNR (signal‐to‐noise ratio) is demonstrated by simulation. As a specific example, the integration effect and limitation of the number of integrations determined by the relationship between the error ellipse and the speed of movement is derived with a GPS as a measurement sensor. An example result includes a maximum of 7 integrations for an allowable error of ±16 m for the GPS sensor measurement, a frame period of 1 s, and a speed of movement of 2.5 m/s, with the bit error rate improved by 8 dB when the input SNR is 0 dB. © 2004 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 88(3): 44–52, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.20154
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