Heimadaemi_09_lausnir

4 tíðni[mhz zoom-in ? bask sendimerkið í tíðni

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Unformatted text preview: 4 Tíðni [MHz] Zoom-in á BASK sendimerkið í tíðni |S(f)| ÝÒd:DÑ i:íðÒ iÖó fBAÑ eÖk i×fÝ Ö iÖb iØa ÖÙÒÙÒa d E fÐíÒÙkóða Ö iÒÒÓg ×Ú e iÙg jaÒÒeÖÙó ×aÑ ×Ø iÐÐØþg eØakÓÑ iðó ×aÑ fe ÐÐdhÓÔÔ í×eÒd iÑ eÖk ið DÑ i4 B iØa ÖÙÒaÒ eÖ×eÒd iÒÒ í Ñ ó Øa ÖaB iØa ÐeÒgd iÒ T b = μ ×ÓgbÙ Öða ÖbÝ Ðg jÙ Ø íðÒ iÒ eÖÞ a e ikÒ iðB×eÒd iÑ eÖk iÓg×eÒd iÑ eÖk i ×ÙbÔ ÐÓ Ø ! Ñ iðaðÚ iðað ÐíÒÙkóða Ö iÒÒÓg ×Ú e iÙg jaÒÒ ×éÙ ×aÑ ×Ø iÐÐØ b ÚeÖeÖfÖð iÐegbaÒdÚ ídd ×eÒd iÑ eÖk jaÒÒa Ñ iðaðÚ ið fÝ Ö×ØaÒú ÐÐ ? c e ikÒ iðú Ø× Ðag ×Ø íðÒ iÖó f×eÒd iÑ eÖk jaÒÒa ía Ø Ðabe× iðbaÒdÚ ídd iÒaa fÑ ÝÒd iÒÒ i d Úaðg eØÙ Ög eÖ×Øe fÐíÒÙkóða Ö iÒÒÓg ×Ú e iÙg jaÒÒeÖÙó ×aÑ ×Ø iÐÐØ íØ íÑ a? aÙ ×Ò : 4 a jÑ ÝÒd 1 2 3 4 5 6 7 8-1 1 Línukóði fyrir bitarununa 1 2 3 4 5 6 7 8-1 1 Burðarbylgjumerkið 1 2 3 4 5 6 7 8-1 1 BPSK sendimerkið í tíma Tími [ μ sek] 1 2 3 4 5 6 7 8-1 1 QPSK sendimerkið í tíma Tími [ μ sek] ÝÒd :DÑ i4 :BÑ eÖk ifÝ Ö iÖb iØa ÖÙÒÙÒa b F Öð iÐegbaÒdÚ íddBeÖ B T = 2 T b = 2 Þ Óg fÖð iÐegbaÒdÚ íddeÖ B T = 1 T b = 1 Þ c jÑ ÝÒd iÖ4Óg5ið× jÙÑÑ ÝÒd iÒÒ iaðbaÒdÚ ídd iÒ fÖÒú ÐÐiØ iÐÒú ÐÐ×ÙÑ hÚ eÖ× Ñ a iÒ ÐÓb eeÖÞfÝ Ö iÖBÓgÞfÝ Ö iÖ 5-20-15-10-5 5 10 15 20 0.05 0.1 0.15 0.2 0.25 Tíðni [MHz] BPSK sendimerkið í tíðni |S(f)| 0.5 1 1.5 2 2.5 3 3.5 4 0.1 0.2 0.3 0.4 Tíðni [MHz] Zoom-in á BPSK sendimerkið í tíðni |S(f)| ÝÒd4 :DÑ i4 :íðÒ iÖó fBÑ eÖk i×fÝ Ö iÖb iØa ÖÙÒÙÒa 6-20-15-10-5 5 10 15 20 0.1 0.2 0.3 0.4 Tíðni [MHz] QPSK sendimerkið í tíðni |S(f)| 0.5 1 1.5 2 2.5 3 3.5 4 0.1 0.2 0.3 0.4 Tíðni [MHz] Zoom-in á QPSK sendimerkið í tíðni |S(f)| ÝÒd5 :DÑ i4 :íðÒ iÖó f Ñ eÖk i×fÝ Ö iÖb iØa ÖÙÒÙÒa d E fÐíÒÙkóða Ö iÒÒÓg ×Ú e iÙg jaÒÒ Öeka í×ÙÒdÙ Ö íØ íÑ aþg eØÙ ÖÚ iØ ÐaÙ ×fa × iÚ eÖ iðkóðaðÙ Ö iÒÒ í×eÒd iÑ eÖk iðÓga fÑ ó ØÙÒ feÖú Ö×kÓ ÖðÙÑ DÑ i5 eÖk iÒ s ( t ) Óg s 1 ( t ) ØkÒaÑ eÖk iÒÓg íþ e iÖÖ iÖöð íØak Ø fö ×ØÙFk eÖ : s ( t ) = A c cos bracketleftbigg...
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