Systems and methods for using code space in spread-spectrum...

H - Electricity – 04 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04J 11/00 (2006.01)

Patent

CA 2518252

Systems and methods for improving the performance of direct-sequence spread- spectrum communication systems. In one embodiment, a system comprises at least one communication channel that utilizes two different orthogonal spreading codes and corresponding portions of the available orthogonal code space. Portions of the data processed by the communication channel are demultiplexed (471) into different streams and covered (472, 473) with corresponding, different orthogonal spreading codes. The streams covered by the different orthogonal codes are then combined (475) and transmitted via the same communication channel. One embodiment utilizes at least two different Walsh codes of different lengths (+ - and + + - -) in order to make use of the three quarters of the Walsh space not utilized by low-rate legacy channels.

L'invention concerne des systèmes et des procédés permettant d'améliorer l'efficacité de systèmes de communications à spectre étalé à séquence directe. Dans un mode de réalisation, un système comprend au moins un canal de communication qui utilise deux codes d'étalement orthogonaux différents et des parties correspondantes de l'espace de codes orthogonaux disponible. Des parties des données traitées par le canal de communication sont démultiplexées (471) en trains différents et recouvertes (472, 473) par les codes d'étalement orthogonaux différents correspondants. Les trains recouverts par les codes orthogonaux différents sont alors combinés (475) et transmis par le même canal de communication. Dans un mode de réalisation, on utilise au moins deux codes de Walsh différents de longueurs différentes (+ - et + + - -) de manière à utiliser les trois-quarts de l'espace de Walsh non utilisé par des canaux existants à faible débit.

LandOfFree

Say what you really think

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

Rating

Systems and methods for using code space in spread-spectrum... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Systems and methods for using code space in spread-spectrum..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Systems and methods for using code space in spread-spectrum... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1536451

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