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Register a new userزيادة وثوقية وصلة تحكم باستخدام الترميز المتكيف المتعدد السويات و استراتيجيات إعادة الإرسال
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نهتم في هذا البحث بدراسة طريقتين من طرق زيادة وثوقية الاتصال اللاسلكي و هما: بروتوكولات إعادة الإرسال الهجينة (HARQ Protocols) و التًرميز المتكيف للمعطيات (Adaptive Coding) ، و ذلك من أجل نظام اتصال لاسلكي بين نقطتين: الأولى ثابتة و تمثل محطة قيادة و تحكم و الثانية متحركة و تمثل جسماً متحركاً يتم التحكم به من محطة القيادة و يقوم بإجراء قياسات مختلفة و ارسالها إلى محطة القيادة.
In this research, We interest to studying two methods of ways to increase the reliability of wireless communication, namely: hybrid retransmission protocols (HARQ Protocols) and adaptive coding data (Adaptive Coding), in order for the wireless communication system between two points: the first is fixed and represents the control and leadership station .The second represents a body moving and it is controlled from the command station , it performs various measurements and sent it to the command station.
References used
W.Cary Huffman and Vera Pless. “Fundamentals Of Error-Correcting Codes ” Cambridge University Press, 2003
David Haccoun, Samuel Pierre, “Automatic Repeat Request,” École Polytechnique de Montréal, Université du Québec, 2002
Vidhyacharan Bhaskar and Laurie L. Joiner, “Adaptive rate coding for wideband CDMA Wireless networks,” Electrical and Computer Engineering, University of Alabama in Huntsville Huntsville, Alabama 35899
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This works aims to study the performance of the mobile system via studying the
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of
modulation, coverage quality and the distant between the receiver and the transmitter. For
parameters were considered as input parameters for the fuzzy logic system mainly are:
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explained. Keywords: Data rate, downlink, signal to noise ratio, modulation type, Fuzzy
logic, spectrum efficiency.
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Most image and video coding techniques are based on the method of
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eo compression. However, in cases of high
compression ratios, the BDCT method results in the block boundaries being
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the
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