Main Synchronization Sequence Design Method for Global Covering Multi-Beam Satellite LTE

摘要

Disclosed is a main synchronization sequence design method for global covering multi-beam satellite LTE, comprising the follow steps: extending a standard Zadoff-Chu sequence to a generalized Zadoff-Chu sequence so as to obtain an initial candidate main synchronization sequence set of more candidate sequences; gradually narrowing down the candidate main synchronization sequence set according to a selection standard of a main synchronization sequence to obtain a final candidate main synchronization sequence set; and obtaining a main synchronization sequence set with optimal eclectic performance and complexity from the final candidate main synchronization sequence set. According to the present invention, a main synchronization sequence with optimal eclectic performance and calculation complexity can be designed for a global covering same-frequency networking multi-beam satellite LTE system.

主权项

1. A main synchronization sequence design method for global covering multi-beam satellite LTE, comprising the following steps:
(1) extending a standard Zadoff-Chu sequence into a generalized Zadoff-Chu sequence, so as to obtain more sets of initial candidate main synchronization sequences of candidate sequences; (2) reducing the sets of candidate main synchronization sequences gradually according to the selection criteria for main synchronization sequences, to obtain a final set of candidate main synchronization sequences, obtaining a time domain sequence su(n) by carrying out zero padding and N-point inverse discrete Fourier transform for the sequences in the set of initial candidate main synchronization sequences:su(n)=1Nzc-1∑k=0N-1d^u(k)exp(j2πknN),n=0,1,…,N-1where,d^u(k)={du(k+Nzc-12-1)k=1,2,…,N2-1du(k-N+Nzc-12)k=N2+1,N2+2,…,N-10k=0,N2; (3) obtaining a set of main synchronization sequences that has the best trade-off between performance and complexity from the final set of candidate main synchronization sequences.