ROTATE SHIFT CODE DIVISION MULTIPLEX COMMUNICATION SYSTEM

摘要

A system using a transmitter which comprises means of generating 4 extended sequences EA0, EA1, EB0 and EB1 using a set (A0,A1) of auto-complementary sequences with length L chips consisting of complete complementary sequences and another similar set (B0,B1), and means of generating a transmitting frame sP obtained by multiplying a cascaded sequence ÊA made of extended sequences EA0 and EA1 by a pilot information p/< ANd> , generating a transmitting frame sD obtained by multiplying a cascaded sequence ÊB made of extended sequences EB0 and EB1 by data b, synchronously adding both the transmitting frames to produce a symbol frame, and transmitting a carrier wave modulated thereby, and a receiver which comprises means of applying a front portion r0 of the synchronously received baseband frame demodulated by above described carrier wave to matched filters M(A0) and M(B0), and applying a rear portion r1 of the synchronously received frame to matched filters M(A1) and M(B1), and means of generating a pilot-response-matrix äpü and a received data-response-matrix PHI , both made of the outputs of M(A0) and M(A1), and of the outputs of M(B0) and M(B1) respectively, and generating an estimate of transmitted data.