The present invention assigns a pair of user ID's to each user. The user ID's are used as addresses to access two orthogonal Walsh codes in a memory. Each Walsh code is 2.sup.n -bits in length and the memory size is 2.sup.n.times.2.sup.n. The orthogonal codes are then used to cover the information symbols...http://www.google.fr/patents/US6198719?utm_source=gb-gplus-shareBrevet US6198719 - Bi-orthogonal code division multiple access system
Bi-orthogonal code division multiple access system
