Patent ID: 9641358
Date: 2017-05-02
CPC Classifications: H04L

Claim:
1. A method of adaptive modulation in a wireless communication system, the wireless communication system including first and second transceivers operable to transmit and receive signals over a communication channel using a plurality of modulation modes, comprising: receiving a first signal transmitted using a first modulation mode over the communication channel from the first transceiver to the second transceiver; determining, from measurements of the communication channel, a first channel equalisation characteristic for an equaliser of a first type for receiving the first signal at the second transceiver; determining, from the first channel equalisation characteristic, a second channel equalisation characteristic for an equaliser of a second type for a second modulation mode; determining a measure of a difference between the second channel equalisation characteristic and the first channel equalisation characteristic; and selecting the second modulation mode for transmission over the communication channel from the first transceiver at least in part in dependence on said measure.