NON-RECURSIVELY GENERATED ORTHOGONAL PN CODES FOR VARIABLE RATE CDMA
摘要
A method and apparatus for constructing a series of PN code sets (30) that can be used for multirate synchronous and quasi-synchronous CDMA systems. The construction technique produces PN codes (22) that are balanced, and that furthermore do not require any synchronization of neighboring base stations. The method is a non-recursive method that uses a permuted orthogonal matrix (24) to modulate permuted orthogonal matrices to create PN codes that support multirate operation. Furthermore, the codes constructed using the method have very good spectral properties (if chosen properly) when the code length, n, is reasonably large.
申请公布号
WO0001092(A1)
申请公布日期
2000.01.06
申请号
WO1999US14456
申请日期
1999.06.24
申请人
L-3 COMMUNICATIONS CORPORATION
发明人
GIALLORENZI, THOMAS;KINGSTON, SAMUEL, C.;BUTTERFIELD, LEE, A.;RALSTON, WILLIAM, T.;NIECZYPOROWICZ, LEON, L.;LUNDQUIST, ALAN, E.