Demodulation and despreading from frequency samples

Shunichiro Egami, Katsumi Sugiyama

研究成果: Conference contribution

2 引用 (Scopus)

抜粋

By the advent of the fast DSP, now, it is possible to change whole over 100MHz bandwidth to frequency samples. This paper propose methods of PSK demodulation and CDMA despreading both starting from frequency samples. PSK signal frequency samples are selected from the whole frequency samples which covers total beam bandwidth. After selecting frequency samples, samples are decimated to appropriate lower rate. Then, frequency samples are transformed to time samples by IFFT. Time samples are squared and transformed again to frequency samples. The first and the second peaks are used to recover carrier information. In case of CDMA, frequency domain correlation method is applied. The code for despreading is transformed to frequency samples by FFT. Then fast correlation method is applied to despreading or despreading synchronization.

元の言語English
ホスト出版物のタイトル21st International Communications Satellite Systems Conference and Exhibit
出版物ステータスPublished - 2003 12 1
イベント21st International Communications Satellite Systems Conference and Exhibit, ICSSC 2003 - Yokohama, Japan
継続期間: 2003 4 152003 4 19

出版物シリーズ

名前21st International Communications Satellite Systems Conference and Exhibit

Other

Other21st International Communications Satellite Systems Conference and Exhibit, ICSSC 2003
Japan
Yokohama
期間03/4/1503/4/19

    フィンガープリント

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Atmospheric Science
  • Electrical and Electronic Engineering
  • Media Technology

これを引用

Egami, S., & Sugiyama, K. (2003). Demodulation and despreading from frequency samples. : 21st International Communications Satellite Systems Conference and Exhibit (21st International Communications Satellite Systems Conference and Exhibit).