Code allocation in CDMA

Details Code allocation in CDMA Code allocation in CDMA

1998-10-19

2000-12-19

Vu, Huy D.

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

370342, H04B 7216

Patent

active

061635243

ABSTRACT:
In spread spectrum communications, a method for allocating and re-allocating channelization codes to new and existing channels in a way that makes the maximum number of codes available at a given time for channels of different rates and different spreading factors. If re-allocations are not performed, a communication system employing the invention has a higher capacity than a system employing a random allocation strategy. The invention also reduces signaling overhead for re-allocations in comparison to a random allocation strategy because fewer re-allocations are necessary.

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Okawa, K. et al., "Orthogonal Multi-Spreading Factor Forward Link For Coherent DS-CDMA Mobile Radio", IEEE 5th International Conference on Universal Personal communications, vol. 2, 12-16, pp. 618-622, Oct. 1997.
UTRA FDD, Spreading Modulation and Descriptionm UMTS (xx.05) VO. 1.0, ETSI (Sep. 1998).

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