6 dbwhz noise power spectral density n0 2015dbwhz

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Unformatted text preview: ty N0 = -201.5dBW/Hz (including equipment noise). P /N0 =43.9dB. Data rate R =50bps. Eb /N0 = (P /R )/N0 =36.9 dB. EECS 455 (Univ. of Michigan) Fall 2012 October 16, 2012 12 / 62 Lecture Notes 12 GPS Receiver Output (Single Satellite) C/A code 0.025 Data= [ −1, 1, −1, −1, 1, −1] 0.02 0.015 Receiver Output 0.01 0.005 0 −0.005 −0.01 −0.015 −0.02 −0.025 0 EECS 455 (Univ. of Michigan) 0.02 0.04 0.06 0.08 time (s) Fall 2012 0.1 0.12 0.14 October 16, 2012 13 / 62 Lecture Notes 12 GPS Receiver Output (Single Satellite) C/A code Receiver Output 0.02 0.015 0.01 0.005 0 0.038 0.0385 0.039 0.0395 0.04 0.0405 0.041 0.0415 0.042 t (sec) EECS 455 (Univ. of Michigan) Fall 2012 October 16, 2012 14 / 62 Lecture Notes 12 GPS Receiver Output (Single Satellite) C/A code −3 x 10 20 Receiver Output 15 10 5 0 0.0398 EECS 455 (Univ. of Michigan) 0.0399 0.0399 0.04 t (sec) Fall 2012 0.04 0.0401 0.0401 October 16, 2012 15 / 62 Lecture Notes 12 GPS Receiver Output (Single Satellite) C/A code −3 x 10 20 Receiver Output 15 10 ~2 µ s 5 0 0.03995 0.03996 0.03997 0.03998 0.03999 0.04 0.04001 0.04002 0.04003 0.04004 0.04005 t (sec) EECS 455 (Univ. of Michigan) Fall 2012 October 16, 2012 16 / 62 Lecture Notes 12 GPS Receiver Output (Two Satellites) C/A code 0.025 Data=[1 1 −1 1 −1 −1 1 1 1 1 1 −1] 0.02 0.015 Receiver Output 0.01 0.005 0 −0.005 −0.01 −0.015 −0.02 −0.025 0 EECS 455 (Univ. of Michigan) 0.05 0.1 0.15 t (seconds) Fall 2012 0.2 0.25 October 16, 2012 17 / 62 Lecture Notes 12 GPS Receiver Output (Four Satellites) C/A code 0.025 0.02 0.015 Receiver Output 0.01 0.005 0 −0.005 −0.01 −0.015 −0.02 −0.025 0 0.05 0.1 0.15 0.2 0.25 t EECS 455 (Univ. of Michigan) Fall 2012 October 16, 2012 18 / 62 Lecture Notes 12 GPS Receiver Output (Four Satellites) C/A code 0.025 0.02 0.015 Receiver Output 0.01 0.005 0 −0.005 −0.01 −0.015 −0.02 −0.025 0 0.05 0.1 0.15 0.2 0.25 t EECS 455 (Univ. of Michigan) Fall 2012 October 16, 2012 19 / 62 Lecture Notes 12 GPS Example 8 transmitted signal 6 4 h(t−τ) 2 0 Filter Output −2 x(τ) h(t−τ) −4 −6 −8 −3 −2 EECS 455 (Univ. of Michigan) −1 0 1 Fall 20...
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This note was uploaded on 02/12/2014 for the course EECS 455 taught by Professor Stark during the Fall '08 term at University of Michigan.

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