Project report and presentation slides

My final project report can be found here and my presentation slides here.

Simulation of multihop relay scenario

I tried simulating a scenario consisting of multi hop relays (upto 3 hops). I referred to [1] for the algorithm for relay selection. You can find the pdf here and the matlab code here.

References:
[1]]S. Ann, K.G. Lee, and H.S. Kim "A Path Selection Method in IEEE 802.16j Mobile Multi-hop Relay Networks" International Conference on Sensor Technologies and Applications, Aug 2008.

Comparative Study of Cooperative Diversity Schemes

Last week I modelled some relaying schemes and evaluated their performance in a specific environmental setting. Today, I did a comparative study of different relaying schemes using the same system model. The pdf can be found here and the matlab code can be found here.

Next week I plan to simulate a relay selection algorithm as specified in [1]. I would also like to evaluate the loss of throughput we get with this algorithm when both the RS and MS are highly mobile.

The relay selection and routing in Wimax can either be done centrally at the BS or at the RS in a distributed fashion.

In a highly mobile environment distributed scheduling seems to be a better option. I will try to verify that.

Reference:
[1]S. Ann, K.G. Lee, and H.S. Kim "A Path Selection Method in IEEE 802.16j Mobile Multi-hop Relay Networks" International Conference on Sensor Technologies and Applications, Aug 2008.

Simulation Results

As of now, I tried out some basic simulations that show the improvement in throughput due to the use of relays. You can find the pdf here:

You can also find the matlab code here: norelay, simple_relay, coop_relay