Encoder and method for efficient synchronisation channel...

Details Encoder and method for efficient synchronisation channel... Encoder and method for efficient synchronisation channel...

2007-11-27

2007-11-27

Kizou, Hassan (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C370S350000, C370S514000, C375S137000

Reexamination Certificate

active

10241966

ABSTRACT:
An encoder and method for efficient synchronization channel encoding in UTRA TDD mode by: producing a codeword a, where a=dG+z modulo-2, where d represents a predetermined code group to be encoded, G represents a predetermined generator matrix, and z represents a function of the code group number and a row of the generator matrix; producing values sk=2a2k+1+ak;k=0, 1, 2, 3, and associated values b0,b1,b2; and producing a value Ssscassociated with the code group, where Sssc=(b0cπ(0),b1cπ(1),b2cπ(2)), cπrepresents a code within the code group, and b0,b1,b2ε(±1,±j). This provides an efficient encoding architecture for the synchronization channel in UTRA TDD mode; and, in addition, by simple manipulation of the generation matrix, a higher chip rate signal may be signalled while still preserving the signalling information for the lower chip rate.

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