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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) ÀüÀÌÁß Åë½ÅÀ» À§ÇÑ ÀڱⰣ¼· Á¦°Å ±â¹ý ±¸Çö
¿µ¹®Á¦¸ñ(English Title) Implementation of Self-Interference Cancellation Techniques for Full-Duplex Communication
ÀúÀÚ(Author) ±è¿µÁØ   ½ÅÁøÀç   Á¶Çö´ö   À±ÁöÈÆ   Young-Jun Kim   Jinjae Shin   Hyundeok Cho   Ji-Hoon Yun  
¿ø¹®¼ö·Ïó(Citation) VOL 20 NO. 03 PP. 0484 ~ 0490 (2016. 03)
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(Korean Abstract)
µ¿ÀÏ ÁÖÆļö¿¡¼­ ½ÅÈ£ÀÇ ¼Û½Å°ú ¼ö½ÅÀ» µ¿½Ã¿¡ ¼öÇàÇÏ´Â ÀüÀÌÁß Åë½ÅÀº ¹«¼± ¸µÅ© ¿ë·®À» Çâ»ó½Ãų ±â¼ú·Î °ü½ÉÀ» ¹Þ°í ÀÖÁö¸¸, ³ëµå°¡ Àü¼ÛÇÏ´Â ½Ã±×³ÎÀÌ Àڽſ¡°Ô °£¼·À¸·Î ÀÛ¿ëÇÏ´Â ÀڱⰣ¼·À» ¾ïÁ¦ÇØ¾ß ¿ë·® À̵æÀ» ´Þ¼ºÇÒ ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼­´Â ÀڱⰣ¼· Á¦°Å ±â¹ýÀ» ±¸ÇöÇÏ°í À̸¦ SDR(Software-Defined Radio) ±â¹ÝÀÇ ¼Û¼ö½Å ½Ã½ºÅÛ°ú °áÇÕÇÑ Å×½ºÆ®º£µå ½ÇÇèÀ» ÅëÇØ Á¦°Å ¼º´ÉÀ» ÃøÁ¤ÇÑ´Ù. ±¸ÇöµÈ ÀڱⰣ¼· Á¦°Å ±â¹ýÀº ¾ÈÅ׳ª ¹èÄ¡ ±â¹ý°ú ¾Æ³¯·Î±× ½ÅÈ£ ·¹º§¿¡¼­ ³ëÀÌÁ Á¦°ÅÇϴ ȸ·Î ±â¹ýÀ¸·Î, ¾ÈÅ׳ª ¹èÄ¡¸¦ ÅëÇÑ ±â¹ýÀÇ µ¿ÀÛ ½Ã ¾ÈÅ׳ª À§Ä¡¿¡ µû¸¥ ÀڱⰣ¼· Á¦°Å °ÔÀÎÀÇ º¯È­¸¦ ÃøÁ¤À» ÅëÇØ º¸ÀÌ°í, ÀÌ µÎ ±â¹ýÀÌ µ¿½Ã¿¡ Àû¿ëµÇ¾úÀ» ¶§ Ãß°¡ÀûÀÎ °ÔÀÎÀ» ¾òÀ» ¼ö ÀÖÀ½À» º¸ÀδÙ.
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(English Abstract)
Full-duplex communication can enhance wireless capacity by enabling simultaneous transmission and reception of the signals on the same frequency spectrum. Such a benefit, however, is only achieved when strong self-interference is well canceled below a sufficient level. To achieve this goal, there have been several approaches for cancellation, each of which is combined with digital-domain cancellation for a higher gain. In this paper, we implement two self-interference cancellation techniques and integrate them with a software defined radio-based wireless communication testbed. Two cancellation techniques (antenna cancellation and noise subtraction) are implemented and the cancellation gain is measured via real experiments. The results show that the gain of the antenna placement technique highly depends on the placement of a receiving antenna and the highest gain is achieved at the expected point, and we show that combining the noise subtraction circuit with the antenna placement further improves the cancellation gain.
Å°¿öµå(Keyword) ÀüÀÌÁßÅë½Å   ÀڱⰣ¼·   °£¼· Á¦°Å   ¾ÈÅ׳ª ¹èÄ¡ ±â¹ý   full-duplex communication   self-interference   interference cancellation   antenna placement technique  
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