1. [³í¹®]ÆäÀ̵ù Çö»ó
(2,500¿ø, 10Page)
±âº»Æú´õ | 2008/08/20 20:35 |
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| where d is the distance between the transmitter and receiver, d0 is the relative referenceh corresponds to a point located in the far field of the antenna. Typically, the value of d0 is taken to be 1 km for large cells, 100m for microcells, and 1m for indoor c.. | |||
| ÅÂ±× : ÆÐÀ̵ù, fading, wireless, ¹«¼±, ³í¹® | |||
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2. [³í¹®]±âº» ÆÐÀ̵ù ä³Î¿¡ ´ëÇÑ ¼öÇÐÀû Ç¥±â
(2,000¿ø, 4Page)
±âº»Æú´õ | 2008/08/20 20:32 |
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| 2.1 Multipath propagation One of the main characteristics of mobile radio is multipath propagation. The electromagnetic wave is scattered, diffracted, and reflected, and reaches the antenna via various ways as an incoherent superposition of many signals. This.. | |||
| ÅÂ±× : ½Ä, ÆäÀ̵ù, fading, spreading, variance | |||
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3. [³í¹®]¹«¼±Ã¤³ÎÀÇ ±¸Çö(½ÇÇè)
(2,500¿ø, 19Page)
±âº»Æú´õ | 2008/08/20 20:31 |
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| Introduction about the experiments. The direct real implementation of the channel requires huge amount of budget. Additionally, it takes too much time to measure the result each time. Therefore, the simulation of channel done by the computer program is widely.. | |||
| ÅÂ±× : channel, matlab, ¸ÅÆ®·¦, ±¸Çö, ä³Î | |||
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4. [ÇÁ¸®Á¨Å×À̼Ç]¹«¼± ÆäÀ̵ù
(2,500¿ø, 68Page)
±âº»Æú´õ | 2008/08/20 20:29 |
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| Introduction Thermal noise The Primary source of performance degradation is thermal noise generated in the receiver. Thermal noise usually has a flat power spectral density over the signal band and a zero-mean Gaussian voltage probability density function(pd.. | |||
| ÅÂ±× : ¹«¼±, wireless, ÆäÀ̵ù, fading, ³í¹® | |||
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5. [ÇÁ¸®Á¨Å×À̼Ç]Wireless ¿¡ ´ëÇÑ ÇÁ¸®Á¨Å×À̼Ç
(3,500¿ø, 47Page)
±âº»Æú´õ | 2008/08/20 20:27 |
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| What is fading? Mathematical expressions for the fading channels. Experiments Free space What is free space? - In the free space, the RF frequency energy does not be affected by absorption, reflection, and refraction. Path loss = Ls(d) = (4¥ðd / ¥ë )2 v.. | |||
| ÅÂ±× : ¹«¼±, wireless, ³í¹®, ÆäÀ̵ù, fading | |||
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6. [ƯÇã¹ý]ƯÇã¹ý Áß ÇÙ½É Æ÷ÀÎÆ®
(1,500¿ø, 6Page)
±âº»Æú´õ | 2008/08/20 20:25 |
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| »ê¾÷Àç»ê±Ç : Áö½ÄÀç»ê±ÇÀÇ Çϳª·Î ¹«Ã¼Àç»ê±ÇÀÓ °¢±¹¿¡ Á÷Á¢ Ãâ¿ø Ãâ¿øÀ¸·ÎºÎÅÍ 1³â 6°³¿ù ÈÄ¿¡ °ø°³ ƯÇã : Á¤ÀÇ ÇöÁ¸ÇÏÁö ¾ÊÀº ¹°°Ç ¶Ç´Â ¹æ¹ýÀ» ÃÖÃÊ·Î ¹ß¸íÇÑ °Í(´ë¹ß¸í) Á¸¼Ó±â°£ Ãâ¿øÀÏ ±âÁØ 20³â ¿¹ º§ÀÌ ÀüÀÚ¸¦ ÀÀ¿ëÇÏ¿© Àüȱ⸦ »ý°¢ÇØ ³½ °Í ¸ñÀû ¹ß¸íÀ» º¸È£ Àå.. | |||
| ÅÂ±× : ƯÇã¹ý, ½ÃÇè, ¿ä¾à, ƯÇã | |||
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7. »çÀ̹ö ±Û¾²±â ¿¡ ´ëÇÑ ¸®Æ÷Æ®
(1,500¿ø, 2Page)
±âº»Æú´õ | 2008/08/20 20:22 |
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| °úÇÐ ±â¼úÀÇ ¹ß´ÞÀº ¿ì¸®¿¡°Ô ¼±ÀÌ ¾øÀ̵µ, Â÷¸¦ Ÿ°í °¡¸é¼µµ ÀÎÅͳݿ¡ Á¢¼ÓÇÒ ¼ö ÀÖ´Â Æí¸®ÇÑ È¯°æÀ» Á¦°øÇØ ÁÖ¾ú´Ù. ¹Ù¾ßÈå·Î »çÀ̹ö ¼¼°è¿Í Çö½Ç ¼¼°èÀÇ ºñÁßÀÌ ºñ½ÁÇØÁ³´Ù ÇØµµ °ú¾ðÀÌ ¾Æ´Ò °ÍÀÌ´Ù. ÀÎÅͳÝÀÇ µîÀåÀº Áö³ 20¼¼±âµ¿¾È Àι®ÇÐ ºÐ¾ßÀÇ ¾ð¾îÇÐÀ» ºñ¾àÀûÀ¸·Î ¹ß.. | |||
| ÅÂ±× : »çÀ̹ö, ±Û¾²±â, Àοë, ÁÖ¼®, ¹®Á¦Á¡ | |||
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8. [¿µÈ¸®ºä]ºÒÆíÇÑ Áø½Ç ¿µÈ ¸®ºä (¿¤ °í¾î)
(1,500¿ø, 1Page)
±âº»Æú´õ | 2008/08/20 20:20 |
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| 21¼¼±â°¡ ½ÃÀ۵Ǹé¼, ³ª´Â Áö±¸ÀÇ Á¾¸»À̶ó´Â »õ·Î¿î ÁÖÁ¦ÀÇ ¿µÈ¿Í ¸¸È¸¦ ¸¹ÀÌ Á¢ÇÏ¿´´Ù. óÀ½¿¡´Â ±×Àú ½Å¼±ÇÑ ÁÖÁ¦¶ó´Â »ý°¢»ÓÀ̾ú´Ù. ÇÏÁö¸¸, Áö±¸ÀÇ Á¾¸»À» ´Ù·é ¿µÈ¿Í ¸¸È´Â ÀØÀ» ¸¸ ÇÏ¸é ´Ù½Ã ³ªÅ¸³ª°ï Çß´Ù. ÀÌ·¯ÇÑ ÀϰüÀûÀÎ Ãß¼¼¿¡ ³ª´Â Àǹ®À» °¡ÁöÁö ¾ÊÀ» ¼ö ¾ø¾ú.. | |||
| ÅÂ±× : ¿¤, °í¾î, ºÒÆíÇÑ, Áø½Ç, ¸®ºä | |||
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9. [¹ß¸íƯÇã]¹ß¸íƯÇã ÀÚ·á
(2,000¿ø, 2Page)
±âº»Æú´õ | 2008/08/20 20:18 |
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| ¹ß¸íÀÇ ¸ñÀû : Ãʺ¸¿îÀüÀÚµéÀº Â÷·®°ú Àå¾Ö¹°°úÀÇ °Å¸®¿¡ ´ëÇÑ °¨°¢ÀÌ ºÎÁ·ÇÏ°í ¿¢¼¿·¹ÀÌÅÍÀÇ °¾àÁ¶ÀýÀÌ ¹Ì¼÷ÇÏ´Ù. ÈĹ氨Áö°æº¸ ½Ã½ºÅÛÀº º¸±ÞµÇ¾îÀÖÁö¸¸, ¼¾¼ÀÇ ¼Ò¸®¸¸À¸·Î´Â °¢µµ¿¡ ´ëÇÑ Á¤º¸¸¦ ¾òÀ» ¼ö ¾øÀ¸¸ç, µû¶ó¼ Ãʺ¸ÀÚµéÀº Á¶Çâ¿¡ ´ëÇØ ¾î·Á¿òÀ» °Þ´Â´Ù. ¶ÇÇÑ, ¿¢¼¿.. | |||
| ÅÂ±× : ¹ß¸í, ƯÇã, ÀÚµ¿, ¿îÀü, ±â¼ú | |||
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10. [ÇÁ¸®Á¨Å×À̼Ç]¹ÙÀÌ¿À ¿¡³ÊÁö
(1,800¿ø, 12Page)
±âº»Æú´õ | 2008/08/20 20:16 |
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| *¹ÙÀÌ¿À¿¡³ÊÁö¶õ? ¹ÙÀÌ¿À ¸Å½º(Bio mass)¸¦ ÀÌ¿ëÇÏ¿© ¾ò´Â ¿¡³ÊÁö. ½Ä¹°À̳ª ¹Ì»ý¹° µî ¿¡³ÊÁö¿øÀ¸·Î ÀÌ¿ë °¡´ÉÇÑ »ý¹°Ã¼. ¹ÙÀÌ¿À ¸Å½ºÀÇ ¼®À¯¼ººÐ ÃßÃâ »ç¶÷À̳ª µ¿¹°ÀÇ ¹è¼³¹° ¸Þź¹ßÈ¿ Ư¼öÇÑ ÇØÁ¶³ª Æó±â¹° ¸Þź¹ßÈ¿ ¶Ç´Â ¾ËÄÚ¿Ã ¹ßÈ¿ *¹ÙÀÌ¿À¿¡³ÊÁöÀÇ ´ÜÁ¡ ÇöÀç »ê.. | |||
| ÅÂ±× : ¹ÙÀÌ¿À, ¿¡³ÊÁö, ´ëü, bio, ¹®Á¦Á¡ | |||
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