公开(公告)号：PT2213028T

公开(公告)日：2017-03-24

申请号：PT08837304

申请日：2008-10-08

Applicant: QUALCOMM INC

Inventor： TAO LUO ,  PETER GAAL ,  ARUN P KANNU ,  KE LIU

IPC: H04J13/00 ,  H04B1/707

公开(公告)号：MY153806A

公开(公告)日：2015-03-31

申请号：MYPI20101163

申请日：2008-10-08

Applicant: QUALCOMM INC

Inventor： TAO LUO ,  KANNU ARUN P ,  KE LIU ,  PETER GAAL

IPC: H04J13/10

Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE EMPLOYING A SCRAMBLING CODE (204) FROM A SET OF SCRAMBLING CODES (204), WHICH IS INDEXED BY PRIMARY SYNCHRONIZATION CODES (PSCS)(1004), TO SCRAMBLE OR DESCRAMBLE A SECONDARY SYNCHRONIZATION CODE (SSC)(202). THE SCRAMBLING CODES (204) IN THE SET CAN BE DESIGNED TO OPTIMIZE PEAK-TO-AVERAGE POWER RATIOS AND/OR MITIGATE CROSS CORRELATION. FOR EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT M-SEQUENCES GENERATED FROM DISPARATE POLYNOMIALS. IN ACCORDANCE WITH ANOTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT CYCLIC SHIFTS OF THE SAME M­ SEQUENCE. ACCORDING TO ANOTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED UPON BINARY APPROXIMATIONS OF POSSIBLE PRIMARY SYNCHRONIZATION CODES (1004) UTILIZED IN A WIRELESS COMMUNICATION ENVIRONMENT. PURSUANT TO A FURTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT GOLAY COMPLEMENTARY SEQUENCES.

公开(公告)号：MY148707A

公开(公告)日：2013-05-31

申请号：MYPI20094440

申请日：2008-05-02

Applicant: QUALCOMM INC

Inventor： PETER GAAL ,  BYOUNG-HOON KIM ,  KE LIU ,  TAO LUO

IPC: H04L27/26

Abstract: DEVICES AND METHODS ARE PROVIDED TO GENERATE A SET OF SYNCRONIZATION CHANNEL SEQUENCES THAT ARE ROBUST WITH RESPECT TO SYSTEMATIC ERRORS OF TIME OFFSETS AND PROVIDE OPTIMAL FREQUENCY OFFSET ESTIMATION. A SET OF ROOT INDICES OF ZADOFF-CHU SEQUENCES THAT OPTIMIZE A PERFORMANCE METRIC (410,460) OR MERIT FACTOR IN FIRST DOMAIN (E.G TIME DOMAIN) AND IN A RECIPROCAL DOMAIN (E.G. FREQUENCY DOMAIN) ARE IDENTIFIED. OPTIMAL INDICES SATISFY A CENTRO-SYMMETRIC RELATIONSHIP WITH RESPECT TO HALF-VALUE OF SEQUENCE LENGTH: WHEN e IS AN OPTIMAL INDEX, N-e IS ALSO AH OPTIMAL ROOT INDEX, FOR SEQUENCES OF LENGTH Q² =N, A BASE SEQUENCE GENERATED WITH AN OPTIMAL SEQUENCE CAN BE UTILIZED TO GENERATE AT LEAST TWO OTHER FURTHER OPTIMAL SEQUENCES THROUGH SIGN-FLIP, CONJUGATION, AND PERIODIC MODULATION OPERATIONS. BASE SEQUENCES CAN BE ASSIGNED TO DIFFERENT SECTORS OF A BASE STATION(110).