Method for modulation
First Claim
1. A method for modulating a signal in a system providing short-range wireless communication, in which method the signal is transmitted in packet format, wherein each packet comprises at least a first part and a second part, the method comprising modulating the first part and the second part by using a first modulation method and a second modulation method, respectively, and initializing said second modulation method by using said first part.
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Abstract
The present invention relates to a method for modulating a signal in a system providing short-range wireless communication. In the signal, the signal is transmitted in packet format, in which each packet comprises at least a first part and a second part. In the method, the first part and the second part are modulated by using the first modulation method and the second modulation method, respectively. The second modulation method is initialized by using the first part. The invention also relates to a transceiver device and a wireless communication system, in which the method is applied.
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Citations
12 Claims
- 1. A method for modulating a signal in a system providing short-range wireless communication, in which method the signal is transmitted in packet format, wherein each packet comprises at least a first part and a second part, the method comprising modulating the first part and the second part by using a first modulation method and a second modulation method, respectively, and initializing said second modulation method by using said first part.
- 8. A transceiver device for modulating/demodulating a signal in a system providing short-range wireless communication, which device comprises transmission means for transmitting the signal in packet format, wherein each packet comprises at least a first part and a second part, the transceiver device also comprising modulation means for modulating the first part and the second part by using a first modulation method and a second modulation method, respectively, and means for initializing said second modulation method by using said first part.
- 11. A wireless communication system which comprises at least one wireless transmitter device for signal modulation and at least one wireless receiver device for signal demodulation for short-range wireless communication, which wireless communication system comprises transmission means for transmitting a signal in packet format, wherein each packet comprises at least a first part and a second part, the wireless communication system also comprising modulation means for modulating the first part and the second part by using a first modulation method and a second modulation method, respectively, and means for initializing said second modulation method by using said first part.
Specification