University of Waterloo
200 University Ave W, Waterloo, ON
N2L 3G1
Phone: (519) 888-4567
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Amir Tasbihi
Performance comparison between variable and fixed signature codes in DS-CDMA systems
Amir Khandani
In a CDMA system, users can use a fixed signature for the whole transmission interval. But there is the possibility for two users to have highly correlated signatures. Hence, high interference exists in the system, and it will degrade the performance. On the other hand, if the users use variable signatures for spreading each modulation symbol, then the interference between the users will not be fixed for all the transmissions.In this way, we are avoiding clustering error symbols resulted from the high interference. As we show in this thesis, this prediction about better performance of variable spreading is not always true. We have discussed several scenarios and shown the performance for both the fixed and variable signature codes.
University of Waterloo
200 University Ave W, Waterloo, ON
N2L 3G1
Phone: (519) 888-4567
Staff and Faculty Directory
Contact the Department of Electrical and Computer Engineering
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Indigenous Initiatives Office.