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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹ÀÎÅͳÝÁ¤º¸ÇÐȸ ³í¹®Áö

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Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ¹Ð¸®¹ÌÅÍÆÄ ´ë¿ª µö·¯´× ±â¹Ý ´ÙÁߺö Àü¼Û¸µÅ© ¼º´É ¿¹Ãø±â¹ý
¿µ¹®Á¦¸ñ(English Title) Deep Learning-Based Prediction of the Quality of Multiple Concurrent Beams in mmWave Band
ÀúÀÚ(Author) ÃÖÁØÇõ   ±è¹®¼®   Jun-Hyeok Choi   Mun-Suk Kim  
¿ø¹®¼ö·Ïó(Citation) VOL 23 NO. 03 PP. 0013 ~ 0020 (2022. 06)
Çѱ۳»¿ë
(Korean Abstract)
Â÷¼¼´ë ¿ÍÀÌÆÄÀÌ Ç¥Áرâ¼úÀÎ IEEE 802.11ay´Â ¹Ð¸®¹ÌÅÍÆÄ ´ë¿ª¿¡¼­ AP (Access Point)°¡ ´Ù¼öÀÇ STA (Station)·Î µ¿½Ã¿¡ µ¥ÀÌÅ͸¦ Àü¼ÛÇϵµ·Ï MU-MIMO (Multiple User Multiple Input Multiple Output) Åë½ÅÀ» Áö¿øÇÑ´Ù. À̸¦ À§ÇØ, ÁÖ±âÀûÀ¸·Î MU-MIMO ºöÆ÷¹Ö ÈÆ·ÃÀ» ¼öÇàÇØ¾ß ÇÏ°í, È¿À²ÀûÀÎ ºöÆ÷¹Ö ÈÆ·ÃÀ» À§Çؼ­´Â AP°¡ ´Ù¼öÀÇ ¾ÈÅ׳ª·Î ´Ù¼öÀÇ ºöÀ» µ¿½Ã¿¡ Àü¼ÛÇÒ ¶§, °¢ STA¿¡¼­ ÃøÁ¤µÇ´Â ½ÅÈ£ ¼¼±â¸¦ Á¤È®È÷ ¿¹ÃøÇÏ´Â °ÍÀÌ Áß¿äÇÏ´Ù. º» ³í¹®¿¡¼­´Â µö·¯´× ±â¹Ý ´ÙÁß ºö Àü¼Û¸µÅ© ¼º´É ¿¹Ãø±â¹ýÀ» Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÑ ¿¹Ãø±â¹ýÀº ƯÁ¤ ½Ç³» ¶Ç´Â ½Ç¿Ü ȯ°æ¿¡¼­ ¹Ì¸® ÇнÀµÈ µö·¯´× ¸ðµ¨À» ÀÌ¿ëÇÏ¿© ´Ù¼öÀÇ ºöÀÌ µ¿½Ã¿¡ Àü¼ÛµÉ ¶§ STA¿¡¼­ ÃøÁ¤µÇ´Â ½ÅÈ£ ¼¼±â ¿¹ÃøÀÇ Á¤È®¼ºÀ» ³ôÀδÙ. À̶§, µö·¯´×ÀÇ ÀÔ·ÂÀ¸·Î °³º° ºöÀÌ Àü¼ÛµÉ ¶§ STA¿¡¼­ ÃøÁ¤µÇ´Â ½ÅÈ£ ¼¼±â Á¤º¸¸¦ ÀÌ¿ëÇÏ°í, °³º° ºöÀÇ ½ÅÈ£ ¼¼±â Á¤º¸¸¦ ¾ò´Â °úÁ¤Àº ÀÌ¹Ì ±âÁ¸ÀÇ ºöÆ÷¹Ö ÈƷÿ¡ Æ÷ÇԵǾî ÀÖÀ¸¹Ç·Î Á¤º¸ ¼öÁýÀ» À§ÇØ Ãß°¡ÀûÀÎ ºñ¿ëÀ» ¹ß»ýÇÏÁö ¾Ê´Â´Ù. ¼º´ÉÆò°¡¸¦ À§ÇØ NIST (National Institute of Standards and Technology)¿¡ ÀÇÇØ °³¹ßµÈ Q-D ä³Î±¸Çö (Quasi-Deterministic Channel Realization) ¿ÀǼҽº ¼ÒÇÁÆ®¿þ¾î¸¦ È°¿ëÇÏ¿´°í ½ÇÃø µ¥ÀÌÅÍ ±â¹ÝÀ¸·Î ¹Ð¸®¹ÌÅÍÆÄ Ã¤³ÎÀ» ±¸ÇöÇÏ¿´´Ù. ½ÇÇè°á°ú¿¡¼­´Â Á¦¾ÈÇÑ ¿¹Ãø±â¹ýÀÌ ´Ù¸¥ ºñ±³±â¹ýº¸´Ù Çâ»óµÈ ¿¹Ãø¼º´ÉÀ» º¸¿´´Ù.
¿µ¹®³»¿ë
(English Abstract)
IEEE 802.11ay Wi-Fi is the next generation wireless technology and operates in mmWave band. It supports the MU-MIMO (Multiple User Multiple Input Multiple Output) transmission in which an AP (Access Point) can transmit multiple data streams simultaneously to multiple STAs (Stations). To this end, the AP should perform MU-MIMO beamforming training with the STAs. For efficient MU-MIMO beamforming training, it is important for the AP to estimate signal strength measured at each STA at which multiple beams are used simultaneously. Therefore, in the paper, we propose a deep learning-based link quality estimation scheme. Our proposed scheme estimates the signal strength with high accuracy by utilizing a deep learning model pre-trained for a certain indoor or outdoor propagation scenario. Specifically, to estimate the signal strength of the multiple concurrent beams, our scheme uses the signal strengths of the respective single beams, which can be obtained without additional signaling overhead, as the input of the deep learning model. For performance evaluation, we utilized a Q-D (Quasi-Deterministic) Channel Realization open source software and extensive channel measurement campaigns were conducted with NIST (National Institute of Standards and Technology) to implement the millimeter wave (mmWave) channel. Our simulation results demonstrate that our proposed scheme outperforms comparison schemes in terms of the accuracy of the signal strength estimation.
Å°¿öµå(Keyword) ¹Ð¸®¹ÌÅÍÆÄ   802.11ay   ºöÆ÷¹Ö   MU-MIMO   µö·¯´×   mmWave   802.11ay   beamforming   MU-MIMO   deep learning  
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