Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
¹Ýº¹ Àü¼Û ´ÙÀ̹ö½ÃƼ ±â¹ý¿¡ µû¸¥ OFDM ±â¹Ý ¼öÁß À½Çâ Åë½Å ½Ã½ºÅÛÀÇ ½ÇÇØ¿ª ¼º´É ºÐ¼® |
¿µ¹®Á¦¸ñ(English Title) |
Performance Analysis of OFDM-based Underwater Acoustic Communication System by Repeated Transmit Diversity Technique |
ÀúÀÚ(Author) |
䱤¿µ
°íÇи²
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Kwang-Young Chae
Hak-Lim Ko
Min-Sang Kim
Yong-Ho Cho
Tae-Ho Im
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 11 PP. 1434 ~ 1442 (2019. 11) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ÀÎõ ´öÀûµµ ºÎ±Ù Çؾȿ¡¼ 2017³â 7¿ù 5ÀϺÎÅÍ 24½Ã°£ µ¿¾È ä³Î º¯È¸¦ Áö¼ÓÀûÀ¸·Î ÃøÁ¤ÇÏ¿´´Ù. ¼öÁß Ã¤³ÎÀº ½Ç½Ã°£À¸·Î ½Ã°£ Ãà¿¡¼ º¯È¿Í ÁÖÆļö Ãà¿¡¼ º¯È°¡ ¹ß»ýÇÔ¿¡ µû¶ó¼ ´Ù¾çÇÑ Ã¤³Î ȯ°æ Ư¼ºÀ» °¡Áö°í ÀÖÀ¸¸ç, ´ÙÁß °æ·Î ÆäÀ̵ù ¹× µµÇ÷¯ È¿°ú µîÀ¸·Î ÀÎÇÏ¿© ¼öÁß Åë½Å ¼º´ÉÀúÇÏ°¡ ¹ß»ýÇÑ´Ù. µû¶ó¼, º» ¿¬±¸¿¡¼´Â ½ÇÇØ¿ª ¼öÁß Åë½Å ȯ°æ¿¡¼ÀÇ Åë½Å ¼º´É Çâ»óÀ» À§ÇÏ¿© ½Ã°£ ¹× ÁÖÆļö ¿µ¿ª¿¡¼ÀÇ ¹Ýº¹ Àü¼Û ´ÙÀ̹ö½ÃƼ ±â¹ýÀ» Àû¿ëÇÏ¿© ¼öÁß Ã¤³Î ȯ°æ¿¡¼ÀÇ OFDM ½Ã½ºÅÛ ¼º´É ºÐ¼®¿¡ °üÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ¼öÁýÇÑ µ¥ÀÌÅ͸¦ ÀÌ¿ëÇÏ¿© ½Ã°£°ú ÁÖÆļö ¿µ¿ª¿¡¼ÀÇ Ã¤³Î ȯ°æ ºñ±³¸¦ ¼öÇàÇÏ¿´À¸¸ç, ÆÄÀÏ·µ ¹èÄ¡ °£°Ý°ú ½Ã°£ ¹× ÁÖÆļö Ãà¿¡¼ÀÇ ¹Ýº¹ Àü¼Û ȸ¼ö¿¡ µû¸¥ BER ¼º´É ºÐ¼®À» ¼öÇàÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, the channel change was continuously measured for 24 hours from July 5, 2017 on the coast near Deokjeok-do, Incheon. The underwater channel has various channel environment characteristics as the change in the time axis and the change in the frequency axis occurs in real time, and the underwater communication performance decreases due to the multipath fading and the Doppler effect. Therefore, in this study, we performed the OFDM system performance analysis in the underwater channel environment by applying the repetitive transmission diversity scheme in the time and frequency domain to improve the communication performance in the real-world underwater communication environment. Using the collected data, we compared the channel environment in the time and frequency domain and analyzed the BER performance according to the pilot spacing and the number of repetitive transmissions in the time and frequency axis.
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Å°¿öµå(Keyword) |
¼öÁß À½Çâ Åë½Å
Á÷±³ ÁÖÆļö ºÐÇÒ ´ÙÁß ¹æ½Ä
½Ã°£ ´ÙÀ̹ö½ÃƼ
ÁÖÆļö ´ÙÀ̹ö½ÃƼ
¹Ýº¹Àü¼Û
Underwater Acoustic Communication
OFDM
Time Diversity
Frequency Diversity
Repetition
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