Patent ID: 7359453
Filing Date: 2008-04-15
Classification: H04L

Abstract:
1. A method enabling transition from a first modulation format for a first transmit burst to a second modulation format for a second transmit burst adjacent to the first transmit burst comprising: providing data for a first transmit burst to first modulation circuitry operating according to a first modulation format; upon receiving a timing control signal triggering ramp-down of an output power of a power amplifier amplifying modulated data from the first modulation circuitry for the first transmit burst, providing a current symbol of the data for the first transmit burst to the first modulation circuitry; upon completion of providing the current symbol delaying data for a second transmit burst by a variable modulator delay time to provide delayed data; providing the delayed data for the second transmit burst to second modulation circuitry operating according to a second modulation format at an expiration of the variable modulator delay time; and resetting the second modulation circuitry at the expiration of the variable modulator delay time; wherein the variable modulator delay time is selected such that a glitch caused by resetting the second modulation circuitry occurs at an output of the second modulation circuitry before ramp-up of the output power of the power amplifier for amplifying modulated data from the output of the second modulation circuitry for the second transmit burst.