1. Mohammad Tamim Alkhodary Ali Al-Saihati
King Fahd University of Petroleum & Minerals  Electrical Engineering Department EE 578 Simulation of Wireless Systems IEEE a UWB Transmitter and Receiver Model Case IV
Mohammad Tamim Alkhodary
Ali Al-Saihati

2. Outlines IEEE 802.15.4a System Model. IEEE 802.15.4a Channel Model.
Rake Receiver Models.
Results.

3. System Model

4. Transmitter
UWB is a nonsinusoidal signal with duration less than 1 ns.
Gaussian Pulse:
1st derivative Gaussian pulse is used for the simulation.

5. Channel Model
The proposed rates for the channel are between 1 kb/s and several Mb/s.
Channel model is a modified version of the original Saleh-Valenzuela (S-V).
The impulse response of the S-V model is given by:
The two dimensional model can be reduced into one dimensional discrete model.
Model includes a mixed Poisson distribution for ray arrival times - possible delay dependence of cluster decay times- frequency dependence of the path loss

6. RAKE Receiver for UWB Systems
A typical rake combiner is limited by power consumption, design complexity, and the channel estimation.
Output of fingers is given by:
Output of the rake receiver:

7. Rake Receiver- Correlators

8. Rake Receiver-Matched Filter

9. Received signal is given by:
Output of Matched Filter:
Output of FIR filter :

10. FIR Implementation

11. Simulation Results: Transmitted signals

12. Signal Responses Through the Channel

13. Received Noisy Signals

14. Received Signals

15. Thank You