Code division multiple access mobile communication system

Multiplex communications – Communication over free space – Combining or distributing information via code word channels...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C375S150000

Reexamination Certificate

active

06879575

ABSTRACT:
In a mobile communication system using a code division multiple access (CDMA) method, spreading code detection and frame/slot timing synchronization (cell search) is conducted by using a long code masked symbol. The spreading factor of the long code masked symbol is set to a value lower than spreading factors of other ordinary symbols. As a result, it becomes possible to reduce the circuit scale and power dissipation of the mobile terminal and raise the speed of cell search.

REFERENCES:
patent: 4969159 (1990-11-01), Belcher et al.
patent: 5790588 (1998-08-01), Fukawa et al.
patent: 5910948 (1999-06-01), Shou et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6167037 (2000-12-01), Higuchi et al.
patent: 6226315 (2001-05-01), Sriram et al.
patent: 6345069 (2002-02-01), Dabak et al.
patent: 6385232 (2002-05-01), Terashima
patent: 6459724 (2002-10-01), Yoneyama
patent: 6507576 (2003-01-01), Suzuki et al.
patent: 6526039 (2003-02-01), Dahlman et al.
patent: 693834 (1996-01-01), None
patent: 0825737 (1998-02-01), None
patent: 0838910 (1998-04-01), None
patent: 0852430 (1998-07-01), None
patent: 67-248698 (1986-05-01), None
patent: 8-79131 (1996-03-01), None
Translation of the Institute of Electronics, Invormation and Communication Engineers, Technical Report of IEICE DSP98-116, SAT96-111, RCS96-122 (1997-01).
Higuchi, K. et al, “Fast Cell Search Algorithm in DS-CDMA Mobile Radio Using Long Spreading Codes”, IEEE, 47th, May 4-7, 1997, pp. 1430-1434.
IEEE, K. Higushi et al, “Fast Cell Research Algorithum in DS-CDMA Mobile Radio Using Long Spreading Codes,” May 4, 1997, pp. 1430-1434.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Code division multiple access mobile communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Code division multiple access mobile communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code division multiple access mobile communication system will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3416763

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.