CDMA 2000 Forward
Link 
Investigators :
Project Leader:
Hamid Gharavi: e-mail gharavi@nist.gov; Telephone: (301) 975-3634
Collaborators
Cadence Design Systems, Inc.
NIST and Cadence Design Systems, Inc. have jointly developed simulation models for the cdma2000 system based on Cadence's SPW communication system design/simulation tool. An extension of the IS-95 standard for cellular phone systems based on mostly Qualcomm's technology, cdma2000 is one of the major systems proposed to the International Telecommunication Union (ITU) for the IMT-2000 standard for third-generation wireless systems.
SPW is an object-oriented language for software development and testing of communication systems. SPW includes models for many basic building blocks in a communication system. The joint work by NIST and Cadence combines and extends these building blocks to yield models for the cdma2000 system, based on the proposed standard specifications. These models will allow communication engineers to measure the performance of the physical layer of cdma2000 systems over a range of communication channel conditions, e.g., whether the cellular phone user is mobile or stationary, the type of environment the user is in (urban/ suburban/countryside), and how much interference the user is getting from other cellular users. This makes it possible to characterize the performance of a cdma2000 system prior to hardware prototyping and expensive field tests.
Model Availability
The cdma2000 models are freely available through SPW quarterly
software releases
The following cdma2000 models are currently available:
Direct Spread Forward Link with and without Supplemental Channels
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Last modified: Wed May 23 12:00:06 EST 2001 |
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