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Architectures for Wideband CDMA
Software Radios
by Vandana Prabhu(vanp@eecs)
& Rhett Davis(wrdavis@eecs)
Abstract
Recent studies have shown that great increases in data rates in
wireless communication systems are possible through the use of multi-user
detection schemes for wideband CDMA systems. Other studies have
concluded that programmability of the wireless hardware is needed
to keep up with changing wireless standards. These are the so-called "software
radios". The question is, can we do both? Is it feasible to
implement a multi-user detection, wideband CDMA receiver using general
purpose hardware? We propose to implement a major part of the system, the
"pilot correlator", on four different processor architectures: Pleiades,
Vector, VLIW, and general purpose. The success of each implementation
will be judged by three criteria which relate to its effectiveness in a
portable wireless device: performance(meeting timing criterion in a real-time
system), complexity/costs and energy.
Project Proposal
Final Project
Presentation (ppt)
Final Report
Appendix A.
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Critical Path Simulation
main1.c
pilot1.S
tick1.1 (cpuCyclesPerMemCycle = 1)
tick1.2 (cpuCyclesPerMemCycle = 2)
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Main Loop
main2.c
pilot2.S
tick2 (cpuCyclesPerMemCycle = 1)
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Zmf Calculation Loop
main2.c
pilot3.S
tick3 (cpuCyclesPerMemCycle = 1)
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