An efficient multirate FDM demultiplexer
New types of communication satellites will be demanded by future traffic requirements in mobile and small fixed-station business systems which are characterised by a large number of small capacity, multi-service users and small earth stations. One approach to providing these services with sufficient...
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| 格式: | Theses and Dissertations |
| 語言: | English |
| 出版: |
2009
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| 主題: | |
| 在線閱讀: | http://hdl.handle.net/10356/19721 |
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| 機構: | Nanyang Technological University |
| 語言: | English |
| 總結: | New types of communication satellites will be demanded by future traffic requirements in mobile and small fixed-station business systems which are characterised by a large number of small capacity, multi-service users and small earth stations. One approach to providing these services with sufficiently cost-effectiveness is using FDMA/SCPC (frequency division multiple access/single carrier per channel) in the uplink and TDM (time division multiplexing) in the downlink. To interface FDMA in the uplink and TDM in the downlink, a multicarrier demodulator (MCD) is required on-board the satellite. The operation of the on-board MCD is the separation of each individual channel and subsequent demodulation, i.e., the demultiplexing and demodulation. |
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