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0.8 0.6 0.4 0.2 ° -0.2 -0.4 -0.6 QPSK Constellation Plot 1 Volt 45° -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 . 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 OFDM Sysmbol Plot with BPSK and Null Carriers + • -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Example of time domain signal 20log(x(t)) Time Domain of 802.11a OFDM Symbol 20 Power time domain = 9.229867e-01' Power freq domain = 9.230769e-01 10 0 -10 -20 -30 -40 -50 -60 -70 0 50 100 150 Time usec 200 250 300 Using the 802.11a specifications given below, in Matlab (or similar tool) create the time domain signal for one OFDM symbol using QPSK modulation. See attached plot for the QPSK constellation. Your results should include the power measure in the time and frequency domain and comment on those results. BW 802.11a OFDM PHY Parameters 20 MHZ OBW Subcarrer Spacing Information Rate Modulation Coding Rate Total Subcarriers Data Subcarriers Pilot Subcarriers DC Subcarrier 16.6 MHZ 312.5 Khz (20MHz/64 Pt FFT) 6/9/12/18/24/36/48/54 Mbits/s BPSK, QPSK, 16QAM, 64QAM 1/2, 2/3, 3/4 52 (Freq Index -26 to +26) 48 4 (-21, -7, +7, +21) *Always BPSK Null (0 subcarrier) 52 subarriers -7 (48 Data, 4 Pilot (BPSK), 1 Null) -26 -21 0 7 21 +26 14 One Subcarrier 1 OFDM symbol 1 OFDM Burst -OBW 16.6 MHz BW 20 MHZ 1 constellation point = 52 subcarriers = one or more OFDM symbols 802.11a OFDM Physical Parameters Show signal at this point x bits do Serial Data d₁ S₁ Serial-to- Input Signal Parallel Converter IFFT Mapper Parallel- to-Serial Converter Guard Interval Insertion DA& Low pass Filter s(t Up- Converter d Guard Intervals Symbols, Fast Foncier Transfom Time Subchannels Frequency Channel x bits Serial Data Parallel- Output to-Serial Converter Signal One-tap Demapper Equalizer FFT Serial-to- Parallel Converter Guard Interval Removal AD Down- Converter

0.8 0.6 0.4 0.2 ° -0.2 -0.4 -0.6 QPSK Constellation Plot 1 Volt 45° -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 . 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 OFDM Sysmbol Plot with BPSK and Null Carriers + • -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Example of time domain signal 20log(x(t)) Time Domain of 802.11a OFDM Symbol 20 Power time domain = 9.229867e-01' Power freq domain = 9.230769e-01 10 0 -10 -20 -30 -40 -50 -60 -70 0 50 100 150 Time usec 200 250 300 Using the 802.11a specifications given below, in Matlab (or similar tool) create the time domain signal for one OFDM symbol using QPSK modulation. See attached plot for the QPSK constellation. Your results should include the power measure in the time and frequency domain and comment on those results. BW 802.11a OFDM PHY Parameters 20 MHZ OBW Subcarrer Spacing Information Rate Modulation Coding Rate Total Subcarriers Data Subcarriers Pilot Subcarriers DC Subcarrier 16.6 MHZ 312.5 Khz (20MHz/64 Pt FFT) 6/9/12/18/24/36/48/54 Mbits/s BPSK, QPSK, 16QAM, 64QAM 1/2, 2/3, 3/4 52 (Freq Index -26 to +26) 48 4 (-21, -7, +7, +21) *Always BPSK Null (0 subcarrier) 52 subarriers -7 (48 Data, 4 Pilot (BPSK), 1 Null) -26 -21 0 7 21 +26 14 One Subcarrier 1 OFDM symbol 1 OFDM Burst -OBW 16.6 MHz BW 20 MHZ 1 constellation point = 52 subcarriers = one or more OFDM symbols 802.11a OFDM Physical Parameters Show signal at this point x bits do Serial Data d₁ S₁ Serial-to- Input Signal Parallel Converter IFFT Mapper Parallel- to-Serial Converter Guard Interval Insertion DA& Low pass Filter s(t Up- Converter d Guard Intervals Symbols, Fast Foncier Transfom Time Subchannels Frequency Channel x bits Serial Data Parallel- Output to-Serial Converter Signal One-tap Demapper Equalizer FFT Serial-to- Parallel Converter Guard Interval Removal AD Down- Converter

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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0.8 0.6 0.4 0.2 ° -0.2 -0.4 -0.6 QPSK Constellation Plot 1 Volt 45° -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 . 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 OFDM Sysmbol Plot with BPSK and Null Carriers + • -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Example of time domain signal 20log(x(t)) Time Domain of 802.11a OFDM Symbol 20 Power time domain = 9.229867e-01' Power freq domain = 9.230769e-01 10 0 -10 -20 -30 -40 -50 -60 -70 0 50 100 150 Time usec 200 250 300
Transcribed Image Text:0.8 0.6 0.4 0.2 ° -0.2 -0.4 -0.6 QPSK Constellation Plot 1 Volt 45° -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 . 0.6 0.4 0.2 0 -0.2 -0.4 -0.6 OFDM Sysmbol Plot with BPSK and Null Carriers + • -0.8 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 Example of time domain signal 20log(x(t)) Time Domain of 802.11a OFDM Symbol 20 Power time domain = 9.229867e-01' Power freq domain = 9.230769e-01 10 0 -10 -20 -30 -40 -50 -60 -70 0 50 100 150 Time usec 200 250 300
Using the 802.11a specifications given below, in Matlab (or similar tool) create the time domain signal for one OFDM symbol using QPSK modulation. See attached plot for the QPSK constellation. Your results should include the power measure in the time and frequency domain and comment on those results. BW 802.11a OFDM PHY Parameters 20 MHZ OBW Subcarrer Spacing Information Rate Modulation Coding Rate Total Subcarriers Data Subcarriers Pilot Subcarriers DC Subcarrier 16.6 MHZ 312.5 Khz (20MHz/64 Pt FFT) 6/9/12/18/24/36/48/54 Mbits/s BPSK, QPSK, 16QAM, 64QAM 1/2, 2/3, 3/4 52 (Freq Index -26 to +26) 48 4 (-21, -7, +7, +21) *Always BPSK Null (0 subcarrier) 52 subarriers -7 (48 Data, 4 Pilot (BPSK), 1 Null) -26 -21 0 7 21 +26 14 One Subcarrier 1 OFDM symbol 1 OFDM Burst -OBW 16.6 MHz BW 20 MHZ 1 constellation point = 52 subcarriers = one or more OFDM symbols 802.11a OFDM Physical Parameters Show signal at this point x bits do Serial Data d₁ S₁ Serial-to- Input Signal Parallel Converter IFFT Mapper Parallel- to-Serial Converter Guard Interval Insertion DA& Low pass Filter s(t Up- Converter d Guard Intervals Symbols, Fast Foncier Transfom Time Subchannels Frequency Channel x bits Serial Data Parallel- Output to-Serial Converter Signal One-tap Demapper Equalizer FFT Serial-to- Parallel Converter Guard Interval Removal AD Down- Converter
Transcribed Image Text:Using the 802.11a specifications given below, in Matlab (or similar tool) create the time domain signal for one OFDM symbol using QPSK modulation. See attached plot for the QPSK constellation. Your results should include the power measure in the time and frequency domain and comment on those results. BW 802.11a OFDM PHY Parameters 20 MHZ OBW Subcarrer Spacing Information Rate Modulation Coding Rate Total Subcarriers Data Subcarriers Pilot Subcarriers DC Subcarrier 16.6 MHZ 312.5 Khz (20MHz/64 Pt FFT) 6/9/12/18/24/36/48/54 Mbits/s BPSK, QPSK, 16QAM, 64QAM 1/2, 2/3, 3/4 52 (Freq Index -26 to +26) 48 4 (-21, -7, +7, +21) *Always BPSK Null (0 subcarrier) 52 subarriers -7 (48 Data, 4 Pilot (BPSK), 1 Null) -26 -21 0 7 21 +26 14 One Subcarrier 1 OFDM symbol 1 OFDM Burst -OBW 16.6 MHz BW 20 MHZ 1 constellation point = 52 subcarriers = one or more OFDM symbols 802.11a OFDM Physical Parameters Show signal at this point x bits do Serial Data d₁ S₁ Serial-to- Input Signal Parallel Converter IFFT Mapper Parallel- to-Serial Converter Guard Interval Insertion DA& Low pass Filter s(t Up- Converter d Guard Intervals Symbols, Fast Foncier Transfom Time Subchannels Frequency Channel x bits Serial Data Parallel- Output to-Serial Converter Signal One-tap Demapper Equalizer FFT Serial-to- Parallel Converter Guard Interval Removal AD Down- Converter
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