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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö > Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö C

Á¤º¸Ã³¸®ÇÐȸ ³í¹®Áö C

Current Result Document : 6 / 6 ÀÌÀü°Ç ÀÌÀü°Ç

ÇѱÛÁ¦¸ñ(Korean Title) WSNȯ°æ¿¡¼­ Decode-and-Forward Çù·ÂÅë½ÅÀÇ ½Ã½ºÅÛ ÃÖÀûÈ­ ¹× ÃÖ´ëÀü¼Û·ü°ú ÀúÀü·Â¿¡ °üÇÑ ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) System Optimization, Full Data Rate and Transmission Power of Decode-and-Forward Cooperative Communication in WSN
ÀúÀÚ(Author) ±è°Ç¼®   °øÇöÀ±  
¿ø¹®¼ö·Ïó(Citation) VOL 14-C NO. 07 PP. 0597 ~ 0602 (2007. 12)
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(Korean Abstract)
º» ³í¹®¿¡¼­´Â WSN(Wireless Sensor Network)¿¡¼­ º¹È£ ÈÄ ÀçÀü¼Û(Decode-and-forward) Çù·ÂÅë½Å ¹æ½Ä¿¡¼­ µ¥ÀÌÅÍ Àü¼Û·üÀÌ 1/2°¡ µÇ´Â °ÍÀ» ±Øº¹ÇÏ¿©, ÃÖ´ëÀü¼Û·üÀÌ µÇ´Â Çù·Â ÇÁ·ÎÅäÄÝÀ» Á¦¾ÈÇÏ¿´´Ù. ±âÁ¸ÀÇ Çù·ÂÇÁ·ÎÅäÄÝ ½Ã½ºÅÛ¿¡¼­´Â ¼Ò½º°¡ µÎ ŸÀÓ ½½·Ô µ¿¾È µÎ µ¥ÀÌÅ͸¦ Àü¼ÛÇÏ°Ô µÇ¸é ´ÙÀ̹ö½ÃƼ À̵æÀº ¾òÁö ¸øÇÏ°í, ´ÙÀ̹ö½ÃƼ À̵æÀ» ¾ò±â À§ÇÏ¿© ŸÀÓ ½½·ÔÀ» Áõ°¡½ÃÅ°¸é Àü¼Û·üÀÌ ³·¾ÆÁö°Ô µÈ´Ù. º» ³í¹®ÀÇ ¾Ë°í¸®ÁòÀº °¢°¢ÀÇ µ¥ÀÌÅ͸¦ Á÷±³ÁÖÆļö·Î ±¸ºÐÇÏ°í ÁÂǥȸÀü ±â¹ýÀ» ÀÌ¿ëÇÏ¿© ÃÖ´ëÀü¼Û·ü°ú ´ÙÀ̹ö½ÃƼ À̵æÀ» µ¿½Ã¿¡ ¾òÀ» ¼ö ÀÖ´Ù. ¶ÇÇÑ, ¼¾¼­³ëµå¿Í ¸±·¹ÀÌÀÇ °Å¸®¿¡ µû¸¥ ¼º´ÉºÐ¼®À» ÇÏ¿´°í ½Ã½ºÅÛÀÇ ¼º´É¿¡ ¿µÇâÀ» ³¢Ä¡´Â ¿ä¼ÒµéÀ» ÄÄÇ»ÅÍ ¸ðÀǽÇÇèÀ» ÅëÇÏ¿© ÃÖÀûÈ­ ½ÃÄ×´Ù. ÃÖÀûÀÇ °Å¸® d=0.2¿¡¼­ BERÀÌ 10-2ÀÏ ¶§ Á÷Á¢ Àü¼ÛÀÏ °æ¿ìº¸´Ù 7dB±îÁö ¸ÖƼ È©º¸´Ù 5dB Á¤µµÀÇ ³×Æ®¿öÅ© Àü·ÂÀÌ Àý¾àµÇ´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ´Ù. µû¶ó¼­ ¹«¼± ¼¾¼­³×Æ®¿öÅ©ÀÇ Àü·ÂÀ» °¨¼Ò½Ã¸ç µ¥ÀÌÅÍ Àü¼Û·üÀ» Áõ°¡½ÃÅ°´Â ½Ã½ºÅÛÀ» Á¦¾ÈÇÏ¿´´Ù.
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(English Abstract)
In conventional cooperative communication data rate is 1/2 than non cooperative protocols. In this paper, we propose a full data rate DF (Decode and Forward) cooperative transmission scheme. Proposed scheme is based on time division multiplexing (TDM) channel access. When DF protocol has full data rate, it can not obtain diversity gain under the pairwise error probability (PEP) view point. If it increases time slot to obtain diversity gain, then data rate is reduced. The proposed algorithm uses orthogonal frequency and constellation rotation to obtain both full data rate and diversity order 2. Moreover, performance is analyzed according to distance and optimized components that affect the system performance by using computer simulation. The simulation results revealed that the cooperation can save the network power up to 7dB over direct transmission and 5dB over multi-hop transmission at BER of 10-2. Besides, it can improve date rate of system compared with the conventional DF protocol.

Å°¿öµå(Keyword) Çù·ÂÅë½Å   ÁÂǥȸÀü   º¹È£ ÈÄ Àü¼Û   ÀúÀü·Â   Cooperative Transmission   Constellation Rotation   Decode-and-Forward   Power Consumption  
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