Optimized Design of MSK modulator based on DSP Builder
Cheng Meng-zhang · Communications technology · 2012
This paper describes first the basic principle of MSK(Minimum Shift Keying) and DDS(direct frequency synthesis),and based on this,proposes an improved design of MSK-modulator,which is realized by means of DDS,and uses less ROM space than the conventional structure by a three-quarter for the sinusoid-wave LUT(look up table).The design is carried out with Altera DSP Builder tool and in Matlab/Simuilnk environment.The simulation successfully verifies the feasibility of the proposed design scheme,and it is unloaded on Altera FPGA chip for hardware implementation.