2019³â Ãá°èÇмú´ëȸ
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
ÁÖÆļö¿µ¿ª ÃÖÀûÀ§Ä¡±â¹Ý ÀÓÆÞ½º »ðÀÔ¿¡ µû¸¥ OFDM-CQAM ½Ã½ºÅÛÀÇ PAPR °³¼± |
¿µ¹®Á¦¸ñ(English Title) |
PAPR Improvement of OFDM-CQAM System through Optimum Position based Impulse Insertion in Frequency Domain |
ÀúÀÚ(Author) |
°ûÀç¹Î
Jae-min Kwak
|
¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 01 PP. 0597 ~ 0599 (2019. 05) |
Çѱ۳»¿ë (Korean Abstract) |
OFDM ½Ã½ºÅÛ¿¡¼ ¼Û½Å´ÜÀÇ IFFT(inverse fast fourier transform) ÀÌÀü¿¡ ÁÖÆļö ¿µ¿ª¿¡¼ ³ôÀº Å©±âÀÇ ÀÓÆÞ½º¸¦ »ðÀÔÇϸé, ½Ö´ë¼º Ư¼ºÀ¸·Î ÀÎÇØ ½Ã°£¿µ¿ªÀÇ OFDM ½ÅÈ£ÀÇ PAPR °¨¼Ò È¿°ú¸¦ °¡Á®¿Ã ¼ö ÀÖ´Ù. º» ³í¹®¿¡¼´Â CQAM(cross quadrature amplitude modulation) ¹æ½ÄÀ» ä¿ëÇÏ´Â OFDM Åë½Å½Ã½ºÅÛ¿¡¼ ¼Û½Å´ÜÀÇ IFFT ÀÌÀü¿¡ ÀÓÆÞ½º¸¦ »ðÀÔÇÔÀ¸·Î¼ °³¼±µÇ´Â PAPR ¼º´ÉÀ» ºÐ¼®ÇÑ´Ù. ¶ÇÇÑ PAPRÀ» ÃÖ¼ÒȽÃų ¼ö ÀÖ´Â ÃÖÀûÀÇ ÀÓÆÞ½º »ðÀÔÀ§Ä¡ ã¾Æ³»°í À̸¦ Àû¿ëÇÏ¿´À» °æ¿ìÀÇ PAPR °³¼±È¿°ú¸¦ °ËÁõÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
When frequency domain high amplitude impulse is inserted before IFFT in OFDM transmitter, the PAPR of OFDM signal in tme domain can be effectively reduced. In this paper, the degree of PAPR improvement of OFDM communication system with CQAM subcarrier modulation is analysed by adopting impulse insertion technique before IFFT of transmitter. Furthermore, it is verified that additional PAPR performance improvement can be obtained by finding optimum position of impulse insertion for maximizing PAPR reduction. |
Å°¿öµå(Keyword) |
OFDM
Impulse Insertion
PAPR
Optimum Impulse Insertion
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ÆÄÀÏ÷ºÎ |
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