Smooth transition for data streams with adjusted gain

A radio frequency (RF) chip comprising a digital front-end, wherein the digital front-end comprises:

• a multiplexer module configured to combine a plurality of orthogonal frequency-division multiplexing (OFDM) symbol streams having different component carriers in a time domain or to transform a single OFDM symbol stream to generate a stream of data having at least one carrier;
• a nonlinearity compensation module configured to:
• adjust a gain of the stream of data at a predetermined frequency corresponding to a length of each of a plurality of blocks;
• and
• apply a digital pre-distortion to the stream of data to compensate a nonlinearity of the stream of data, wherein the stream of data is divided into the plurality of blocks;
• and
• a transition smoothing module configured to apply soft edge pulse-shaping to smooth transitions of the plurality of blocks.

A method implemented by a system on chip (SoC) for wireless communication, comprising:

• obtaining a stream of data having at least one carrier, wherein the stream of data is divided into a plurality of blocks;
• adjusting a gain of the stream of data based on a predetermined frequency corresponding to a length of each of the plurality of blocks;
• appending a ramp-down tail sequence to a first block of the stream of data after a last sample of the first block;
• and
• generating a ramp-up head sequence for a second block immediately after the first block, based on a head sequence of the second block.