21GHz帯デジタル衛星放送システムにおける変調方式及び誤り訂正方式の検討 : 無線・光伝送

概要

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Currently, the broadband FM is used for satellite broadcasting system in the 12 GHz band. For future 21 GHz band broadcasting systems, digital broadcasting will be expected because of the higher flexibility and compatibility with other digital media. The information bit rate will increase according to requirement of definition and channels. The 21 GHz band satellite broadcasting has degradation of performance due to rain. Therefore, we need to adopt modulation methods that has advantage to noise and efficiency of frequency bands. The convolutional coding and the Viterbi decoding is known to have advantage to Gaussian noise. Also, the trellis coded 8 PSK has advantage to efficiency of frequency bands. This paper describes consideration of these modulation and error correction methods for digital satellite broadcasting system in 21 GHz band.
社団法人映像情報メディア学会の論文
1993-02-25