Process in Week3

 Week3

In week 3 we made some more good progress, here is an account of what we achieved:

1. We made a good start on the Sustainability Report. This report is due before we meet in week 4, the group intends on working on the rest of the report during the session for week 3.

2. After discussing the issue as a group, we now collectively understood the concept of fading effect and the code for simulating the second noisy system is also completed.

In our simulation, we assume that the bipolar NRZ signalling is transmitted through a long distance by tropospheric and ionospheric propagation with the effect of heavily built-up urban environment. We also assume that this is a flat fading channel and there is no dominant propagation along a line of sight. The channel power gain in this simulation is assumed to be independent of each other. 

Therefore, the flat-fading channel has memoryless properties.The simplified transmission model is shown below:

Figure 1: the simplified model of the binary digital transmission through AWGN and fading channel

The equations used during coding are listed below:

After adding the simulation of bipolar NRZ signalling transmitted through AWGN channel, the figure of BERs as a function of SNR per bit is obtained (shown below).

Figure 2: The BERs of bipolar NRZ signalling transmitted through different channels

Next week

1. Complete the code for simulating the capacity performance of second noisy system.

2. Analyse the results we obtained and give a conclusion about the performance of the two noisy systems.

3.Complete the poster about project.