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PEMODULASIAN QAM 16 PADA SALURAN TELEPON

PEMODULASIAN QAM 16 PADA SALURAN TELEPON. Sigit kusmaryanto http://sigitkus.lecture.ub.ac.id. PEMODULASIAN QAM 16 PADA SALURAN TELEPON. QAM (QUADRATUR AMPLITUDO MODULASI LAJU PENGIRIMAN SINYAL SISTEM QAM 16 PADA SALURAN TELEPON MODULATOR QAM 16 DEMODULATOR QAM 16.

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PEMODULASIAN QAM 16 PADA SALURAN TELEPON

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  1. PEMODULASIAN QAM 16 PADA SALURAN TELEPON Sigit kusmaryanto http://sigitkus.lecture.ub.ac.id

  2. PEMODULASIAN QAM 16 PADA SALURAN TELEPON • QAM (QUADRATUR AMPLITUDO MODULASI • LAJU PENGIRIMAN SINYAL • SISTEM QAM 16 PADA SALURAN TELEPON • MODULATOR QAM 16 • DEMODULATOR QAM 16

  3. QUADRATUR AMPLITUDO MODULASI # DEFINISI # KARAKTERISTIK * DUA SINYAL PEMBAWA *KOMBINASI DARI MODULASI AMPLITUDO DIGITAL DAN MODULASI FASA DIGITAL

  4. LAJU PENGIRIMAN SINYAL R = 1 / T Misal : d Kanal baseband

  5. DIGRAM SINYAL QAM 16

  6. MODULATOR QAM 16 Pengubah 2 bit ke 4 level X LPF Masukan Osilator Pembawa PENJUMLAH Q Q* 1 1* ±90 F/ 4 bit per detik Pengubah 2bit ke4 LPF X

  7. DEMODULATOR QAM 16 Pengubah 4 level ke 2 bit Modulator Balans LPF Penemu Sinyal Pembawa Pengubah Paralel ke Serial 90 Pengubah 4 level ke 2 bit Modulator Balans LPF

  8. KESIMPULAN • QAM MEMPUNYAI DUA BUAH SINYAL PEMBAWA QUADRATUR • PADA SISITEM QAM 16 SEBUAH SIMBOL DIKIRIMKAN SETIAP 4BIT MASUKAN SEHINGGA MEMUNGKINKAN 16 BUAH SIMBOL UNTUK DIKIRIMKAN • QAM DAPAT DIGAMBARKAN SEBAGAI BENTUK KOMBINASI DARI MODULASI AMPLITUDO DIGITAL DAN MODULASI FASA DIGITAL

  9. REFERENSI • Feher, Kamilo .1987. Advanced Digital Communication . USA : prentice-Hall • Haykin, Simon . 1989. An Introduction to Analog and Digital Communications . Singapore : John Willey • Lathi , B . P . 1983 .Modern Digital and Analog Communication System . USA : Holt – Saunders. • Schwartz , Mischa . 1986 . Transmisi , Informasi , Modulasi dan Bising . Terjemahan Srijatno W., Ph.D. Jakarta : Erlangga. • Smith , David R . 1985 . Digital Transmission Systems . New york :Van Nostrand Reinhold Company . • Stallings , William .1991 . Data and Computer Communications. Singapore : Maxwell Macmilan International Edition. • Roddy , Denis and John Coolen . 1985 . Electronic Communication . New Delhi : Prentice-Hall.

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