2ND QUARTER 2007‚ VOLUME 9‚ NO. 2 www.comsoc.org/pubs/surveys CHANNEL ESTIMATION FOR WIRELESS OFDM SYSTEMS MEHMET KEMAL OZDEMIR‚ LOGUS BROADBAND WIRELESS SOLUTIONS‚ INC. AND HUSEYIN ARSLAN‚ UNIVERSITY OF SOUTH FLORIDA ABSTRACT Orthogonal frequency division multiplexing (OFDM) is a special case of multi-carrier transmission and it can accommodate high data rate requirement of multimedia based wireless systems. Since channel estimation is an integral part of OFDM systems‚ it is critical
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surfaces that control how the pilot can manipulate the plane in flight. On the outside trailing edge of the wings are the ailerons‚ they control how much the airplane rolls when the pilot turns the yoke (similar to a steering wheel in a vehicle) either right or left. On the inside of the wings‚ close to the body of the plane‚ are the flaps. They are used to produce extra lifting force at slower speeds‚ they are controlled by a handle in between the pilot and co-pilot seats. At the rear of the airplane
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It is always the pilot’s responsibility to ensure that they are fit for the flight from the very beginning until completion of the flight. However‚ pilots are still flying when fatigued and the organizations that employee pilots should be actively involved to mitigate pilots flying while fatigued. “The causes of fatigue can range from boredom to circadian rhythm disruption to heavy physical exertion” (Fatigue in Aviation‚ n.d‚ p.2) and for these reasons it is difficult to stop fatigue entirely from
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first female to fly by the Atlantic Ocean. However‚ she proved the women’s could do this not just men. Amelia Earhart had lived a great life and was awarded in history as one of the greatest women to ever live. She had accomplished many things as a pilot that no women had ever accomplished before. Though her love for flying finally killed her in a mysterious plane accident‚ her memories and accomplishments still live on with us today. Amelia Earhart is considered a hero because she withstood many
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years. The captain has over 12‚000 total flight hours‚ over 7‚000 of which are as pilot-in-command. In 737s‚ the captain has over 7‚900 hours‚ with more than 2‚600 as the pilot-in-command. The first officer has been with Southwest for about 18 months. The pilot has about 5‚200 total flight hours‚ with 4‚000 of those as pilot-in-command. In 737s‚ the first officer has about 1‚100 hours‚ none of which are as the pilot-in-command. This was the first trip the flight crew had flown together and it was
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Airmanship is something very close to a `Road-Sense‟ in the air to help a pilot to fly safely. “Do the right thing at the right moment” can be regarded as a simplified meaning of airmanship. Behind this phase‚ there are many things that a pilot must think about if he is to fly safely. A combination of knowledge‚ skills‚ situation awareness‚ flight discipline‚ and to exercising excellent decision makings is the key for the pilot to fly safely and efficiently in the crowded skies. The Importance of
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At 91 years of age Mr. Yutaka Kanbe is one of the lucky few Japanese kamikaze pilots to have survived the horrors of World War II. He could have died following the fortune of thousands of fellow kamikase pilots on suicide tasks in the dying moments of WWII. But his turn never came. He was saved by the August 15‚ 1945 unconditional surrender of Japan. Asked about governmental affairs‚ he’s unhappy over some political events now happening under PM Shinzo Abe‚ and he called it a crazy idea to bestow
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industry includes manufacturing‚ airport operation‚ maintenance‚ and pilots. It looks at how the aviation industry has a positive influence on other business such as sightseeing/tour‚ hotels‚ and restaurants. Finally the paper looks at how the industry is doing now and the projections for the future. The aviation industry is alive and well. The aviation industry means different things to many people. Some people only think of the pilots who fly commercial airplanes when they think of aviation. Others
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Christmas chaos for Cathay passengers on the cards as pilots start work-to-rule action Page 1 of 2 Christmas chaos for Cathay passengers on the cards as pilots start work-to-rule action Wednesday‚ 03 December‚ 2014‚ 5:17pm News › Hong Kong LABOUR Phila Siu phila.siu@scmp.com Flight attendants accept airline’s offer of a pay rise as pilots begin work-torule action As Cathay Pacific pilots embarked on a work-to-rule action yesterday‚ the airline avoided a similar Christmas slowdown by its cabin
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would the pilot be thinking? I would be thinking AHHHHHHHHH!!!!!! HELP‚ THE WING IS COMING APART!!!!!!! I DON’T WANT TO DIE!!!!!!! First of all‚ they should check every plane before it takes off so nothing bad happens when it gets up to 35‚000 feet. In the article by “Yahoo Travel Editors” it said that in mid flight over San Antonio‚ Texas part of the left wing tore off and the wing bent. Passengers were screaming and yelling “Ahhhhh look the part of the wing flew off.” So the pilots wanted all
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