¾Ç¼º ±¤°í °Ô½Ã¹° ´ëÃ¥ÀÌ °­±¸µÉ ¶§±îÁö ÀϽà Áß´ÜÇÕ´Ï´Ù

1998/10/20 (14:27) from 143.248.10.8' of kmac.kaist.ac.kr' Article Number : 51
Delete Modify jin (rfkim@netian.com) Access : 4807 , Lines : 21
Re: SPREAD SPECTRUMÀÇ ¼ö´ÜÀÌ ¹¼´Ï±î?
¼® wrote:
>µµÀúÈ÷ ±Ã±ÝÇؼ­ ¹ÌÄ¡°Ú¾î¿ä
>Àú´Â À̵¿Åë½Å¿¡ °üÇÑ, ƯÈ÷ CDMA¿¡ °üÇØ ±Ã±ÝÇÑÁ¡ÀÌ ¸¹ÀÌ ÀÖ½À´Ï´Ù.
>´ë¿ªÈ®»ê Åë½ÅÀ» °øºÎÇÏ¸ç ´ë¿ªÈ®»êÀÇ ¼ö´ÜÀ» GOLD CODE(LONG PN CODE)³ª WALSH CODE·Î ¾Ë°í Àִµ¥ ±×°Ô ¾Æ´Ï¶ó´Â ¼Ò¸®¸¦ µé¾ú½À´Ï´Ù.
>´ë¿ªÈ®»êÀÇ ¼ö´ÜÀÌ QPSKº¯Á¶¶ó´Â °ÍÀÌÁö¿ä?
>ÀÌ°Í¿¡ ´ëÇØ ¾Ë°í ½Í½À´Ï´Ù.
>´Ü¼øÈ÷ ½ÅÈ£(14.4K.9.6K)°¡ È®»ê(1.23M)µÇ´Â °Í¸¸ º»´Ù¸é QPSKº¯Á¶ Àü¿¡ ÀÌ¹Ì LONG PN CODEµî¿¡ ÀÇÇØ È®»êµÇ´Âµ¥ Á¤º¸ÀÇ È®»ê°ú ¿ªÈ®»êÀ̶ó´Â °ÍÀ¸·Î ´ë¿ªÈ®»êÀ» º»´Ù¸é QPSKº¯Á¶µµ ¸Â´Â °Í °°Àºµ¥..(À¸ ¸Ó¸®¾ÆÆÛ)
>QPSK¿¡ ´ëÇØ ¾Ë·ÁÁÖ½Ã¸é ¾ÈµÉ±î¿ä?

À½..Àúµµ À߾ƴ°ÍÀº ¾øÁö¸¸.. Á¦°¡ »ý°¢Çϱ⿡´Â QPSK´Â Á¤º¸º¯Á¶¶ó°í ¾Ë°íÀÖ½À´Ï´Ù.

µû¶ó¼­ ´ë¿ªÈ®»êÀº PN CODE¸¦´õÇϸ鼭 ´ë¿ªÀÌ È®»êµÇ´Â°É·Î,,

¼Û½ÅÇÒ¶§. µ¥ÀÌÅÍ¿¡ Á¤º¸º¯Á¶(QPSK:1Â÷º¯Á¶)--->È®»êº¯Á¶( PN CODE:2Â÷º¯Á¶)

ÇÑ´ÙÀ½. ¾ÚÇÁ·Î....À̳»¿ëÀº ÀϺ»CQÃâÆÇ»ç¹ßÇà

Æ®·£Áö½ºÅͱâ¼ú 1996³â 11¿ùÈ£ ¿¡¼­ Á¦3Àå ½ºÆÑÆ®·³ È®»ê¹æ½Ä ¿ø¸®¿ÍÀÀ¿ë À̶ó´Âµ¥¼­ ¹ßÃ鸦 ÇÏ¿´½À´Ï´Ù...³»¿ëÀº Á÷Á¢È®»êÀ» ÀÌ¿ëÇÑ 2.4GHZ LAN Á¦ÀÛ±â»çÀÔ´Ï´Ù. µµ¸é¿¡ ȸ·Î±îÁö³ª¿É´Ï´Ù Çѹø º¸½Ã±â¸¦....

µµ¿òÀÌ º°·Î µÇµå¸®Áö ¸øÇÑ°Í °°½À´Ï´Ù....
±×·³....

Backward Forward Post Reply List
Untitled

±¹Á¦Å×Å©³ëÁ¤º¸¿¬±¸¼Ò
info@ktechno.co.kr