Intercom Chip Set simulation status

1
Intercom Chip Setsimulation status

• Josie Ammer
• 9/7/99
• Intercom group meeting

2
Hierarchy of simulations
RF TX/RX
equivalentmodel
Physical Layer
equivalentmodel
Interface Proxim-like
Protocol Layer
3
Radio Specification

• CDMA radio
• chip rate 25 MHz 31 chips/symbol
• QPSK mod gives 1.6 Mbits/sec per channel
• Intercom application will use TDMA within one of
  the CDMA channels
• less like CDMA, more like TDMA with DSSS

4
Opening the simulink simulation

• open MATLAB
• cd(\\Hitz\designs\ics\ics_shadow)
• pr_library
• click on aqua box to set your path
• click on blue box to open two transceiver
  simulation
• click on the play button

5
Physical layer components

• Transceiver
• Transmit section
• Digital Baseband (implement on-chip)
• RF (use as stand-alone)
• Receive section
• RF (use as stand-alone)
• ADC (use as stand-alone, or include on-chip)
• Digital Baseband (implement on-chip)
• Channel

6
Component status BB TX

• Current
• Very high level functional model
• Ideal does not include noise, etc.
• Need
• Implementable structural description(Johan is
  working on parts of this)
• Non-idealized model including noise and distortion

7
Component status RF TX

• Current
• simple BB equivalent model
• noise here is not much of an issue since signal
  strength is so high
• Need
• decision on mode of operation
• pending Johans next chip

8
Component status RF RX

• Current
• very accurate BB equivalent model
• Need
• spec of existing chip
• results of chip testing

9
Component status ADC RX

• Current
• very accurate BB equivalent model
• Need
• status of Davids forthcoming chip

10
Component status BB RX

• Current
• Detailed structural model
• To be sent out RSN
• Need
• keep abreast of status (from Paul)
• results of chip testing

11
Component status Channel

• Current
• very simplified functional model
• Need
• accurate functional model

12
Tasks

• Components
• Track progress on 5 radio components
• Coordinate component interfaces
• Simulation effort
• Develop accurate BB equiv. model for RF including
  channel, TX and RX
• Include control signals in phys. layer sim.
• Extract physical layer model for use in protocol
  simulations
• Develop protocol model

13
Tasks cont.

• Chip Design
• Master CAD flow for simulink-gtsilicon
• Design fabric for protocol, digital BB sections