Signal transmission method with frequency and time spreading
OwnerKoslarinventor
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Abstract
A transmission system using frequency and time spreading techniques is disclosed. The transmission system allows priority of transmission parameters and adjustment of same in relation to transmission quality and channel characteristics measured in real time.
Claims32
In a transmission system comprising a transmitter and a receiver, a method of transmitting information symbols having a symbol rate (R) via a channel having a bandwidth (B), the method comprising:
- defining transmission quality and channel characteristics;
- in the transmitter, frequency spreading and time spreading the information symbols, and thereafter transmitting an information symbol signal;
- upon receiving the transmitted information symbol signal in the receiver, adaptively de-spreading the information symbols and controlling transmission system gain in relation to the transmission quality and channel characteristics.
In a transmission system comprising a transmitter and a receiver, a method of transmitting information symbols via a channel having a bandwidth, the information symbols being transmitted in accordance with one or more transmission parameters selected from a group of parameters comprising transmission speed, bit error rate, and transmitter power, the method comprising:
- determining a first priority transmission parameter;
- assessing the channel transmission characteristics at the receiver;
- communicating the assessed channel transmission characteristics to the transmitter before beginning transmission of the information symbols;
- and,
- transmitting the information symbols while maintaining a predetermined value for at least the first priority transmission parameter.
Dependencies are inferred from the claim text.