The spectrum spread GMSK/M-ary radio which possesses oscillator frequency edit

摘要

(57) Abstract The communication device includes the transmitter (21) and the receiver. The transmitter (21) in order M-1 where each one consists of the k bit to form the unique sign, includes M next encoder (23) which is formed. M is equal to 2k, k is correct integer. The transmitter (21) in order to form the spectrum spread cord/code word sequence on the basis of the sign which is formed by M next encoder, in addition on the basis of the 1st and 2nd Gold cord/code polynomial, furthermore includes the cord/code generator (25) which is formed. The transmitter (21) sends the radio signal to the receiver on the basis of the above-mentioned spectrum spread cord/code word sequence. The receiver in order to receive the input signal which is formed on the basis of the radio signal which is received, is identical with the cord/code word sequence which is used the 1st shift register (81) which is formed, and in order to encode the above-mentioned sign and the cord/code word sequence which is formed locally is received, in order to make annulation shift, the 2nd shift register (83) which is formed is included.