Patent ID: 7720187

Claim:
A method for reducing discrete power spectral density (PSD) components of wideband signals transmitting blocks of data, each block including N elements, the method comprising the steps of: (a) acquiring N symbols of pseudo-random data, each symbol having K bits, by generating pseudo-random data, and shifting the generated pseudo-random data into a shift register, wherein the shift register includes N designated symbol areas; (b) selecting one bit from a fixed position within each designated symbol area of the shift register to generate N selected bits; (c) selectively inverting a respective element in one of the data blocks responsive to the selected bits; (d) acquiring one or more bits of pseudo-random data to replace a corresponding one or more respective bits of the acquired N symbols of pseudo-random data, by generating the one or more bits of pseudo-random data, and shifting the generated one or more bits into the shift register to replace a corresponding number of bits of the acquired N symbols of pseudo-random data that are concurrently shifted out of the shift register; and (e) repeating steps (b) through (d) with successive ones of the data blocks.