Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
¼öÁß Åë½Å¿¡¼ Àü¼Û·ü Çâ»óÀ» À§ÇÑ Faster Than Nyquist Àü¼Û±â¹ý ¿¬±¸ |
¿µ¹®Á¦¸ñ(English Title) |
Faster Than Nyquist Transmission Method for Throughput Improvement in Underwater Communication |
ÀúÀÚ(Author) |
¹éâ¿í
Á¤Áö¿ø
Chang-uk Baek
Ji-won Jung
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 20 NO. 09 PP. 1688 ~ 1695 (2016. 09) |
Çѱ۳»¿ë (Korean Abstract) |
¼öÁß¿¡¼ÀÇ Åë½ÅÀº Çؼö¸é ¹× ÇØÀú¸é µî¿¡ ÀÇÇÑ ½ÅÈ£ÀÇ ¹Ý»ç¸¦ ÅëÇØ ´ÙÁß°æ·Î Çö»óÀÌ ³ªÅ¸³´Ù. ÀÌ·¯ÇÑ ´ÙÁß°æ·ÎÀÇ ¿µÇâÀ¸·Î ½ÅÈ£´Â ¿Ö°îµÇ°í ¿øÇÒÇÑ ¼ö½ÅÀ» ¹æÇØ¹Þ°Ô µÈ´Ù. ¶ÇÇÑ, ¼öÁß Åë½ÅÀº Á¦ÇÑµÈ ÁÖÆļö¸¦ »ç¿ëÇÏ°í ´ÙÁß °æ·Î·Î ÀÎÇÑ ½Éº¼ ³» °£¼·À¸·Î Àü¼Û·üÀÌ ¸Å¿ì ³·°í ¼º´ÉÀÌ ÀúÇϵȴÙ. µû¶ó¼ º» ³í¹®¿¡¼´Â ¼öÁßÅë½Å ȯ°æ¿¡¼ Àü¼Û·ü Çâ»ó ¹× ¼º´É Çâ»óÀ» À§ÇØ Åͺ¸ µîÈ ±â¹ý ±â¹ÝÀÇ Faster Than Nyquist Àü¼Û¹æ½ÄÀ» °í·ÁÇÑ´Ù. ¹«¼± Åë½Å¿¡¼ Àü¼Û·ü Çâ»óÀ» À§ÇØ Àû¿ëµÇ°í ÀÖ´Â Nyquist ¼Óµµº¸´Ù ºü¸£°Ô Àü¼ÛÇÏ´Â Faster Than Nyquist ±â¹ý¿¡ ´ëÇØ ´ÙÁß °£¼·ÀÌ Á¸ÀçÇÏ´Â ¼öÁß È¯°æ¿¡¼ È¿À²ÀûÀÎ º¹È£ ¸ðµ¨À» Á¦½ÃÇÏ°í ±âÁ¸ÀÇ Àü¼Û·ü Çâ»ó¿¡ °í·ÁµÇ´Â õ°ø ºÎÈ£È ¹æ½Ä°ú ½ÇÁ¦ È£¼ö ½ÇÇèÀ» ÅëÇÏ¿© ¼º´ÉÀ» ºñ±³ ºÐ¼®ÇÏ¿´À¸¸ç, Àû¿ë °¡´É¼º ¹× È¿À²¼ºÀ» È®ÀÎÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Underwater communication has multipath error because of reflection by sea-level and sea-bottom. The multipath of underwater channel causes signal distortion and error floor. The excessive multipath encountered in underwater communication channel creates inter symbol interference, which is a limiting factor to achieve a high data rate and bit error rate performance. Therefore, to increase throughput efficiency and improve performance, this paper consider FTN (Faster-than-Nyquist) signalling based on turbo equalization. FTN signalling is a technique of transmitting information at a rate higher than the allowed Nyquist limit. This paper presented efficient decoder structure of FTN transmission in the environment of multipath underwater channel and we compare the performance between FTN method and conventional punctured method in lake experimentation. As a results of lake experiment, we confirmed FTN method based on turbo equalization is applicable and efficiency in underwater communication. |
Å°¿öµå(Keyword) |
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Faster Than Nyquist
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Underwater communication
Multipath
Inter symbol interference
Faster Than Nyquist
Punctured codes
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