Even Polyphase Barker Codes with large alphabet

In the given article were synthesized even polyphase Barcer codes (EPBS) with large alphabet for compression ratio ≤ 100. The additional property of evenness provides decreasing number of operation of multiplication in correlator in two times, what is important for practical application of EPBC for digital compression. EPBC were received by method of conjugate gradients. EPBC have the same peak-to-peak side lobe level (SLL) of 1/N, as Barker codes. CF of EPBC is real function, what is very convenient for weight processing, as in this case, all coefficient of weight filters are real numbers. It is shown that additional decreasing SSL is possible with increasing of frequency of discretization in two, three, four or even twenty times. After each splitting, procedure of synthesis has to be repeated. Under each “splitting” EPBC in two times, minmax SLL is decreasing in two times also. Under each splitting, compression ration is fixed. Method of “splitting” discrete allows receiving super low SLL for small compression ratio.