Abstract of my Final Project

Here is my final project abstract. The title of my final project is Analysis of Convolutional Coding with Viterbi Decoding Performance via Frequency Non-Selective Rayleigh Fading. You know, this topic came to me when I went to Electrical Engineering Department Library. Mmm, I was inspired by a final project by Yudi Darmadi, EL 99. Thanks, Mas…

Abstract:

One of the channel coding deployment methods is utilizing convolutional encoder in transmitter side and Viterbi decoder in receiver side. Some parameters influence their performance in correcting error. They are constraint length, polynomial generator, bit number of soft decision, and code rate. This final project gives details about varying constraint length and bit number of soft decision that affect the system performance which is indicated by Bit Error Rate (BER) and energy per normal noise E_b/N_0­­ correlation. It also gives details the effects of interleaver and deinterleaver attachment to the communication system performance.

We used computer simulation for modelling the system. There is a final project which explained this problem but only applied Additive White Gaussian Noise (AWGN) channel in the system. Because AWGN channel is not practical, we use frequency non-selective Rayleigh fading channel as a channel transmission.

Here are the results of the simulations. To reach BER 10^-3­, at 3-bit soft decision, without interleaver, and 3, 5, 7, 9 constraint length, we need E_b/N₀ at 17, 14, 15, and 12.5 dB. It shows that bigger constraint length, lesser the requirements of E_b/N₀. Moreover, utilization of 3-bit soft decision gives 2-dB performance better than hard decision. However, more number of bit soft decision, for 10-bit soft decision, the performance is unchanging, but the delay is increase and complexity as well. When we applied interleaver and deinterleaver for 10 bit in the system, to reach BER 10^-3, at 3-bit soft decision and constraint length 9, we need E_b/N₀ at 6 dB.

Keywords:

Viterbi decoder, Rayleigh fading channel, soft decision, constraint length, generator polynomial, code rate, convolutional encoder

New toy: Skype

Thanks to Kemas Zakki who told me how to use Skype with my laptop in my beloved Campus. Mmm, just configured some port and proxy setting. But, yet I don’t have friends who use this skype. only you and Boma (i don’t have it yet), Zak! (my id of skype: arikuncoro) Would you add me as your buddy list? please, do!

By having this account, I have a free call VoIP for the other skype accounts. If I want to call some PSTN number, handphone, or international call, I should have some ‘voucher’ by purchasing it via credit card. It is 10 euro. Sadly, I haven’t credit card yet. So, I just wanna tell you, if you have a laptop, please… have skype ID.. (for my friends who want to keep contact closely by this VoIP tools).

Yahoo and Google also have VoIP tools by Yahoo Messenger and Google Talk. But, I have never tried it before. Therefore I can’t compare them. But, my friends, Komeng and Zakki, said that Skype is the best for VoIP. Another advantage is, in the morning you will see 7 million accounts of Skype online, and it will grow up when in the night, until 12 million people online. Trying to find friends in over the world? It’s easy.

To keep contact with voice, why don’t you try Skype?

Again, I will thank Zakki for this. Good luck bro, for your Schlumberger career. Hope you will get your dream!

Life is learning, is that so?

I think life is a learning process. It includes study, love, sport, music, and many things that I can learn. Mmm, yesterday, I learned tennis. And really, I have many progress. I played tennis with Komeng, Hendra, and Anjas. We have progress. Such a while we made some rally. Nice. Next sport: Badminton on Friday, July 4th 2008 at 1 pm with my classmates. For me, it is learning.

Love. Mmm, it’s rather sensitive. And I think it’s not quite easy as I think before. I learn to understand a woman. It looks like easy…but… exactly NOT. Even I have made a relationship since eight months ago, still I seldom didn’t understand why she feel something that I thought it’s not important. Yeah… for me, it is learning. Just to adjust my feeling with her… it needs process and understanding.

Study. Mmm, formally, I will get an academic title from ITB. But, I think… it’s just a starting point. I just need some refreshing air to heal… to prepare my new environment then. For me, it’s learning.

Never ending learning,… it’s not about reading. it’s not just about transcript of my GPA. it’s not just about writing. But it’s all about a packet of learning that should I take and combine.

Next step: Find Jobs or Being an Entrepreneur?

Many people always take two choices to a fresh graduate like me. For me, Mmm, it’s not hard. Depend on my heart and feeling. MMm,… I just want you to pray me… to be healthy and happy. This is the way to take many success.

Find Jobs or being an entrepreneur is not the final aim. But, the essence is how I can reach my wishes. Hope I will get it. Get my dreams.

After such a while I study from pre-School when I was 3, then continue to my study to elementary, junior, senior- school, then university.. It was so exhausting. Try to refresh and get something new is my medicine.

I just want to say thank you very much to many people who support me. Even, they disturbed me. I just thought that they paid attention to me.

Yeah, yesterday I have been playing tennis with Komeng, Hendra, and Anjas. We have progress. Next sport: Badminton on Friday, July 4th 2008 at 1 pm with my classmates.

Some people say, I am…

just for relax.

Now I am sitting under the tree. Some of trees surrounding me. But, my mind was surprised when my guide lecture said that I am not a convincing person. Yeah. I think nowadays, yes.

But, I see. It is because when I presented my final project, I am looked not sure. I was afraid of making some mistakes. Maybe, it will bring me to the better chance. Forget all the bad things before. Start a new day with sure step and forward!

Under the trees makes me sleepy. Uaaaaaheeem

Finally,…

Finally, I finished my final project presentation. Even I should revise some mistakes. But I passed it.

Thank’s God… Thanks everybody. Even it didn’t show my full effort.

ChickenPox before Final Project Presentation

This is once in my life. I’ve got smallpoxes. It started when I swam in Sabuga swimming pool. Then I had got a headache. Then… continue to fever. Then… I am lucky. I have got some smallpoxes on my skin. Nitemare? not really. Because many people said that this virus, called Varicella, always attack one human once in entire his life. But, when I brows in wikipedia… I’ve got some mistakes. Fun.

Many people say I mustn’t go bath. But in that web written that I should go bath to remove some germs in my body. Really. This makes my knowledge of this disease up…

Thanks to my Mom who came to my boarding house for three days. Thanks to Mbak Hesti, who had taken the prescription of the medicines (coz she is a pharmacist), Tere who bought the medicines, Farid who carried me to the doctor, Ibu Ida who always prepared my meal and borrowed me a bad for my Mom, Nantha
who borrowed me mattress. And all of my friends.

Thanks God. It is first and last. (kata orang Indo: Yang pertama dan terakhir). Even, scientifically it is possible to have smallpox for more than once.

On Wednesday, June 25 at 1 pm, I will go to the battle. Final Project Presentation. Hope I will always be healthy. Don’t be afraid. Hehe Thanks GOD.

Slow down Baby… Take it easy Just Let It flow…

Maybe those words that should I muse today. It is true that people have unique abilities and lacks. How can we reach it (if it is possible) or just let it (if it is impossible). Should I get my dream?

This morning I let my body to the swimming pool. Even yet, I can’t swim already. not yet… but I will… I don’t know why. Free style, or frog style? Dana said free style, Nantha said frog style…

No matter what style should I learn. But, one thing. I MUST have this ability. NO EXCUSE!

Mandiri Entrepreneurship Workshop

Last June 2nd at West Hall ITB, I joined Wirausaha Muda Mandiri (WMM). It was so fun. It is not only because of Dian Sastro and Artika Sari Devi, but also the subject of the workshop that opened my mind. There were caliber speaker such as Rhenald Kasali, Iman Taufiq, and many succeed entrepreneurs.
Here are my screen shoots:

I also sang with ITB Students Choir there. We sang Bendera, Bangun Pemudi Pemuda, and I Believe I Can Fly. For the last song, I didn’t sing anymore because of my sleepiness.

I enjoyed this workshop, and I was so delightful when my friends, Rico, Nanta, etc., known this workshop by my posts at Civitas milis. We’ve got a reward of transportation fee, a laptop bag, lunch, coffee break, and dinner. Btw, for participants of this workshop, you should take the certificate at PCAD ITB.

Then Rico and I went to Setyo’s house to join Makrab EL 04. ow ow…

Paper deadline

Today I have done two third part of my stadium generale paper. It is not easy as I think before. Why? because I should collect the update data from internet about telecommunication in Indonesia first. Then read it and organizing my idea. At first, I’ve got spirited. But in the middle of the night now,… I am so lazy to continue it.

God, give me some spirits, please.

Btw, forgetting for a second this matter. I have gone to Church with Tere and her little brother. Her brother, Bryan has been done his ITB Admission test this day. Hope he will pass his test.

OK, keep smile and take it easy, boy! (motivate myself!)