- タイトル
- Spread-spectrum techniques for the provision of packet access on the reverse link of next-generation broadband multimedia satellite systems
- 著者
- O.del Rio Herrero, G.Foti, G.Gallinaro
- 出典
- IEEE J. Select. Areas Commun.,
vol.22, no.3, pp.574-583,
2004/04.
- キーワード
- satellite communication, spread ALOHA, DAMA, DS-CDMA, Poisson arrival, throughput, transmission delay, simulation, FEC, multimedia
- 概要
- This paper will examine the potential performances of spread-spectrum-based access techniques via the interaction channel of an Internet protocol (IP)-based multimedia satellite system. In particular, a theoretical analysis of the spread-Aloha technique will be given for the case of forward error correction coded systems. Then, the performance of spread-Aloha access will be confirmed by simulation and compared with that of a conventional time-division multiple-access (TDMA)-based combined free/demand assignment multiple-access system. It appears that spread-Aloha-based techniques, although achieving a lower maximum throughput than the TDMA-based access scheme, may provide a better experience to the user due to the lower transmission latency. Finally, the prospect of a spread-spectrum-based access scheme combining Aloha and reservation mechanisms will be briefly overviewed.
- 分類
- [SST]CDMAシステム応用：衛星移動体通信 (No.4452)