Think I have figured out the solution to the 2nd question (my post on 25Nov, 2009), and the required SNR has dropped to 12dB. This SNR is still much higher than published 802.16e spec for QPSK 1/2 (Table 266). Any ideas why the difference?
- This seems to be QPSK with 5/6 rate coding. The SNR required to meet 10% PER comes out to be 15dB which is close to the published SNR for 16-QAM 3/4 in the 802.16e spec. Is this something you have observed? Or have I got this wrong?
- If I want to modify this model to look at convolution 1/2 coding, what changes need to be made? I am guessing there needs to be some changes before the Interleaver block which expects 384bits as input. Any model you can share?
Thanks very much for this contribution. I am running MATLAB verion 7.7 (R2008b) and enountering errors when I run the uwb.mdl:
Reference to non-existent field 'comm'.
Error in 'uwb/Scopes': Initialization commands cannot be evaluated
Anyone who faced similar problems? Please feel free to send me a response at email@example.com