Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
MIMO ¼öÁß Åë½Å¿¡¼ µµÂø½Ã°£ Â÷ÀÌ¿¡ µû¸¥ º¸»ó ¾Ë°í¸®Áò |
¿µ¹®Á¦¸ñ(English Title) |
The Phase Estimation Algorithm of Arrival Time Difference in MIMO Underwater Sensor Communication |
ÀúÀÚ(Author) |
¹éâ¿í
Á¤Áö¿ø
Chang-uk Baek
Ji-won Jung
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¿ø¹®¼ö·Ïó(Citation) |
VOL 19 NO. 07 PP. 1531 ~ 1538 (2015. 07) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â µÎ °³ÀÇ ¼Û¡¤¼ö½Å ¼¾¼ »çÀÌÀÇ À§»ó ¿ÀÂ÷¸¦ º¸»óÇϱâ À§ÇØ Åͺ¸ µîÈ ±â¹ÝÀÇ MIMO ¼öÁß Åë½ÅÀÇ È¿À²ÀûÀÎ º¹È£±â ±¸Á¶¸¦ Á¦½ÃÇÏ¿´´Ù. ½Ã°ø°£ ºÎÈ£È ½Ã½ºÅÛ¿¡¼´Â ´ÙÁß ¼Û¡¤¼ö½Å±â »çÀÌÀÇ À§»ó Â÷ÀÌ´Â ¿Ïº®ÇÏ´Ù°í °¡Á¤ÇÏ¿´À¸³ª, º» ³í¹®¿¡¼´Â MIMO ¼öÁß Åë½Å ȯ°æ¿¡¼ ¼·Î ´Ù¸¥ ¼Û¡¤¼ö½Å±â »çÀÌÀÇ À§»ó ¿À·ù¿¡ ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù. ±× °á°ú ¿À·ù ¼º´ÉÀÌ ½É°¢ÇÏ°Ô °¨¼ÒÇÏ°Ô µÊÀ» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ¿À·ù ¼º´É ¿µÇâÀ» ÃÖ¼ÒÈÇϱâ À§ÇØ µµÂø ½Ã°£ Â÷À̸¦ º¸»óÇÑ DD À§»ó ÃßÀû ¹æ½Ä ±â¹ÝÀÇ À§»ó º¸»ó ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ¿´´Ù. º» ³í¹®Àº MIMO ¼öÁß Åë½Å ȯ°æ¿¡¼ÀÇ À§»ó ¿À·ù¿¡ ¿µÇâÀ» ºÐ¼®ÇÏ°í, ±× ¿µÇâÀ» ÃÖ¼ÒÈ ÇÒ ¼öÁß Ã¤³Î ¸ðµ¨¿¡ ´ëÇÑ º¸»ó ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, we proposed receiver structure based on an iterative turbo equalization to cope with phase difference between two sensors in MIMO underwater communication channel. In a space-time coded system, it is often assumed that there are no phase errors among the multiple transmitter and receiver chains. In this paper, we have studied the effect of the phase errors between different transmit sensors and different propagation paths in the environment of MIMO underwater communication system, and have shown through BER performance by computer simulations that the bit-error-rate performance can be severely degraded. A decision-directed estimation and compensation algorithm has been proposed to minimize their effects on the system performance. In this paper, we investigate the phase differences and their effects on multiple-input and multiple-output systems, and propose a compensation algorithm for underwater channel model to minimize their effects.
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Å°¿öµå(Keyword) |
½Ã°ø°£ °ÝÀÚ ºÎÈ£
Åͺ¸ µîȱâ
¼öÁß À½Çâ Åë½Å
DD-Loop
MIMO
Space time trellis code
Turbo Equalization
Underwater acoustic communication
Decision Directed Loop
MIMO(Multiple Input Multiple Output)
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