Abstract: An apparatus for multiple modulations with a transition mode in a baseband transmitter and method therefor. An apparatus includes a first modulator, a second modulator, and a modulation output device. The first modulator performs a first modulation to produce a first modulated signal. The second modulator performs a second modulation to produce a second modulated signal. In response to a mode selection signal indicating switching the desired modulation output signal from a current one of the first and the second modulated signals to another one thereof, the modulation output device operates in a transition mode for a transition period to generate the desired modulation output signal according to a weighted sum of the first modulated signal and the second modulated signal. After the transition period, the modulation output device outputs the another one as the desired modulation output signal.

Abstract: A method for analyzing the reliability of a flag value carried by a current block is disclosed. The method includes: determining whether the current block is a dummy block, and determining the flag value as invalid if the current block is determined as a dummy block. The step of determining the current block is a dummy block can be implemented through two methods. The first method is to utilize information (signal quality indicators) of the current block and a previous block to perform the dummy block determination. The second method is to only utilize information (including the signal quality indicators and coded USF correction indicators) of the current block to generate a determination value through substituting the information into a predetermined equation, and to perform the dummy block detection according to the determination value.

Abstract: After a transmitter has encoded a flag value, the flag value is included in a block. A method for analyzing the reliability of the flag value outputted by the transmitter includes receiving the block; according to the received block, obtaining a coded flag value; according to the coded flag value, decoding the coded flag value to obtain a decoded flag result; determining whether or not the received block is or is not a dummy block; and if the received block is determined to be a dummy block, negating the reliability of the decoded flag result; otherwise, analyzing the reliability of the coded flag value to determine whether to affirm or negate the reliability of the decoded flag result.