EKTEL Weblog

Baseband Processor (SIMT)

Posted by admin on July 18th, 2010

A baseband Processor must be able to process several different modulation technology, eg. CDMA and OFDM. The processor must be programmatic because wireless standards are changing rapidly such as new modulation scheme are constantly emerging.

There is a need for Multi Standard Baseband Processor capable of processing different wireless carrier standards. The Two traditional CPU architecture that is used or could be used are:

VLIW(Very Long Instruction Word)

Disadvantage: Low Power Efficiency due to their wide instruction needed to be fetched every clock cycle.

SIMD(Single Instruction Multiple Data)

Disadvantage: Different Operation cannot be performed concurently

Anders Nilsson proposed a new architecture design for multi-standard baseband processor described below:

SIMT(Single Instruction stream Multiple Tasks) is the new architecture proposal that should increase efficiency. SIMT architecture should have the benefits of VLIW and SIMD in the design.

The SIMT concept has been demonstrated in the BBP1 baseband processor in small scale in Wireless LAN Transceiver. A complete system employing SIMT has been designed in BBP2 baseband processor which has been employed in WiMAX, WCDMA and IEEE 802.11 a/g.

The objective of this research is to find a programmable baseband processor architecture that can process different wireless technologies such as-

GSM
WCDMA
Bluetooth
GPS
WiMAX
Digital TV
LTE
Other Multi Media Technologies

The new architecture should have the following constraints:

Power Efficiency
Area Efficiency
Capable of processing multiple radio standards

About Wireless System Processor:

In general a wireless system processor has 3 sub processor as follows:

Baseband Processor
MAC Processor
Application Processor

The funtions of a Baseband Processor are as follows:

during transmit it facilitates modulation of bits from MAC processor into analog signal performed by the DAC. It facilitates channel coding, modulation and symbol shaping
during receive it facilitates demodulation of analog into digital bits performed by ADC. It facilitates Filtering, synchronization and gain-control, Demodulation, channel estimation and compensation and Forward Error Corrections.

For more information email us at info@ektel.com.np

Internal Link Problem – webpages within webpages url

Posted by admin on July 13th, 2010

Many times when you use SEO tools to analyze the Internet Link Architecture you will find internal links to pages that should not exist:

For eg;

http://ww.yoursite.com/contact.html/home.html

You know that pages like this should not have existed but they are. They should be either:

http://www.yoursite.com/contact.html

http://www.yoursite.com/home.html

The solution to this type of problems as seen when internal link checker tools are used is to contact the website host provider where your website is hosted.

Tell them that there are pages like “http://ww.yoursite.com/contact.html/home.html” being displayed online that you don’t want to be displayed.

The reason for this is because there are internal links between webpages that you want to be displayed and webpages which even should not have existed but they are being displayed online.

For more information email us at info@ektel.com.np or leave a comment

Microwave Radio Installation and Commissioning

Posted by admin on July 2nd, 2010

In Mobile Network, microwave radio are used to transfer data between BTS sites, between BTS and BSC or MSC. There are both advantages and disadvantages of using Microwave Radio links. Microwave radio communication is normally used for sites which are located in rural areas where site accessibility is difficult. It is because the cost of Microwave Radio communication installation and commissioning is cheaper and it’s also easier to implement than other transmission technology such as Optical fiber. The disadvantage of Microwave Radio over Optical fiber is the data transmission speed and interference. It is however better in many ways than the PSTN MODEM link. Proper frequency planning is very important in Radio Communication.

The main components of Microwave Radio Communication are:

IDU (Indoor Unit)
ODU (Outdoor Unit)
Antenna and its transmission cables(feeder cables)

Press Release Syndication

Posted by admin on June 12th, 2010

Off site Search Engine Optimization technique that we are going to talk about now is called PR(Press Release) syndication. There are many websites out there to syndicate a Press Release out on the web. There are many ways to syndicate out to these press release sources. There are approximately, unlimited Press Release Sites out there. But I would say there is about 80 to 100 that you can look at, they are highly relevant and there is also PR News Wire which is like a traditional media and some of the larger websites will go actually pull their information from. So if I was looking at PR syndication, I would want to indicate what category my Press Release is going to fit into.

In this example, we are going to say “health” which is my category. Then we want to sign an author which we will use say “John Keiser”. And this press release sites also likes to make it search engine friendly so I am going to add a keyword which for example, if we are talking about the defeating diabetes website URL, I am going to use the word “diabetes” and then if the article is about type 1 for example (which it is), I am going to add keyword “Type 1 diabetes” and point once again that I am in the keyword area of syndicating this press release as being Search Engine Optimized. And then it’s going to ask your URL, website address which you should place at the bottom. Now it going to happen that on some press release sites, it will allow you to hyperlink the content that is relevant particular topic, straight back into your website or will just straight index the entire article in this press release. The news because it has a news content function of it will actually rank real highly in the search engines, then over time it will actually place the traffic from the press release back into your website as the date of the press release starts to get older and replace in the index with your website URL and builds strong relevancy to your website.

Boost your Page Rank

Posted by admin on June 11th, 2010

This topic is about Page Rank. Today we are going to talk about quick, easy, cheap way to boost your PR in minutes. So, you probably know several of the more standard ways including blog post, link bait, article syndication and mass directory submission. But this is an old little trick that is not talked about too much and it works like a charm. So let’s go right ahead. Essentially the links that we will get are from software directories. Now the thinker SEO out there might argue that these aren’t the top quality links that you should be looking for because they are not from the 100 percent relevant sites to your content. We are not going to disagree with that, it’s actually true. But what also true is something that JFK said a long time ago, it was- a rising tide lifts all ships. And that’s a phrase that is often used in SEO to explain that the more links a site has in general, the better all the pages of this particular site will rank. No if those other pages actually have or don’t have links. So in very short terms, if you can get couple of hundred, relatively high PR links to one of you page even if there are not from 100% relevant sites, it’s still a very good thing.

Alright, the first thing we are going to do is, we need to get hand on a piece of software that we have permission to distribute, meaning that we can go and submit it to software directories and have them linked back to our site. We do not need anything fancy in this case because we are not looking for actual traffic or visitors to come from the software although we will get some. But what we are actually looking for are the backlinks that the submission of the software in of itself will give us. So in this particular example we have got hands on a XML sitemap generator, happens to be a very good one, but that is just the bonus in this case because all what we really need is a something to submit.

The next thing that you want to do is, create a pad file. Now that is just a file in which you store all the information that you are going to need to submit to the software directories. For example, they are going to ask you the name of the developer and bunch of other questions about the software. You do not want to fill in that form manually time and time again so you just complete that one time, save it in what’s called a pad file and that will just be used to submit to as many sites as you want to include in your little PR run. So if you want to use this method for free, you can download pad creator 2.0 which you can find at padcreator.com. It is freeware so it won’t cost you a cent. In the case tutorial article, I am using software called promo soft.

If you have any questions you can visit us at our website Internet Marketing Business