| 摘要 |
The invention relates to a method of transmitting and receiving a primary data stream of data blocks, each data block formed by a plurality of N symbols, over a communication system that is robust to transmission errors and signal interruptions due to obstacles, and that minimizes bandwidth usage. The transmitting method comprising: forming a secondary data stream comprising shortened data blocks formed from the M most significant symbols of data blocks of the primary data stream, where M<N; and transmitting the primary and secondary data streams in accordance with, respectively, first and second transmission parameters; wherein the first and second transmission parameters causing the transmitting of the secondary data stream to be more robust against transmission errors than the transmitting of the primary data stream. |
