| 摘要 |
<p>This invention presents methods for transmitting and receiving data via a satellite and satellite communication systems thereof. A transmitted signal may include a stream of transmission blocks, whereas each transmission block may differ from a previous transmission block by any of a spreading characteristic, an error correction code-rate characteristic and a modulation characteristic. In addition, any of the spreading, error correction code-rate and modulation characteristics may be changed in accordance with momentary reception conditions at a receiving station.</p> |
