MULTI-CARRIER SPREAD SPECTRUM DEVICE USING CYCLIC SHIFT ORTHOGONAL KEYING, TRANSMITTER, RECEIVER, AND COMMUNICATION SYSTEM THEREOF

摘要

A multi-carrier spread spectrum device using cyclic shift orthogonal keying includes: a modulation unit for receiving a first part of data bits and transforming the first part of data bits to a modulation symbol d_i by modulation; a cyclic-shift unit for receiving a base code c₍₀₎ and a second part of data bits, and performing a cyclic-shift to the base code c₍₀₎ in accordance with the second part of data bits to generate a CSOK symbol c_(mi); and a multiplier for multiplying the modulation symbol d_i by the CSOK symbol c_(mi) to generate a spread spectrum signal c_i.