| Presentation | 1994/10/17 A Transmission System Facilitating Reception under Low Carrier to Noise Ratio using Diect Sequence Spread Spectrum-An Application to Means against Rain Atカenuation in 21GHz band D.B.S.- Hiroyuki Hamazumi, Yasuhiro Ito, Kazuyoshi Shogen, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a Time-Division Multiplexed direct sequence SS(TDM-SS)hierachical transmision system,as a 21GHz band wide RF- band digital HDTV transmission system.The band 21.4-22.0GHz was allocated to Region 1 and 3 for the Broadcasting-Satellite HDTV Service at WARC-92.However,it is very difficult to build a DBS system in the 21GHz band with conventional techniques,since the rain and gas attenuation in the band is quite large.To cope with this large attenuation,TDM-SS hierarchical transmission system combined with variable e.i.r.p.system is considered to be effective.The TDM-SS system is suitable for 21GHz DBS systems from the viewpoint of satisfying the regulation of spectral power flux density outside the service area resolved in WARC-92. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | HDTV / DSB / spread spectrum / rain attenuation / hierarchical transmission / variable EIRP |
| Paper # | SST94-48 |
| Date of Issue |
| Conference Information | |
| Committee | SST |
|---|---|
| Conference Date | 1994/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Spread Spectrum Technology (SST) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Transmission System Facilitating Reception under Low Carrier to Noise Ratio using Diect Sequence Spread Spectrum-An Application to Means against Rain Atカenuation in 21GHz band D.B.S.- |
| Sub Title (in English) | |
| Keyword(1) | HDTV |
| Keyword(2) | DSB |
| Keyword(3) | spread spectrum |
| Keyword(4) | rain attenuation |
| Keyword(5) | hierarchical transmission |
| Keyword(6) | variable EIRP |
| 1st Author's Name | Hiroyuki Hamazumi |
| 1st Author's Affiliation | NHK() |
| 2nd Author's Name | Yasuhiro Ito |
| 2nd Author's Affiliation | NHK |
| 3rd Author's Name | Kazuyoshi Shogen |
| 3rd Author's Affiliation | NHK |
| Date | 1994/10/17 |
| Paper # | SST94-48 |
| Volume (vol) | vol.94 |
| Number (no) | 280 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |