METHOD AND EQUIPMENT FOR GENERATING TERMINAL TEST SIGNAL OF CMMB SYSTEM

摘要

A method for generating a terminal test signal of a China Mobile Multimedia Broadcasting (CMMB) system is provided in the present invention. The method includes: implementing Reed Solomon (RS) coding, byte interlacing, Low Density Parity Check (LDPC) coding and bit interlacing, then implementing constellation mapping and Orthogonal Frequency Division Multiplexing (OFDM) modulating, multiplexing frame-forming the signal modulated by OFDM, and further more filtering the signal by multiplexing frame-forming. Intercepting and transforming the coded and modulated signal and circularly sending the transformed signal to a terminal with appointed frequency and amplitude. Further more, an equipment for generating a terminal test signal of a China Mobile Multimedia Broadcasting (CMMB) system is also provided in the present invention, the equipment includes: a signal processing platform, a signal intercepting and transforming device and a signal generator. The method and equipment provided in the present invention can provide a standard test signal for testing performance to a terminal is current and flexible and saves the cost.