Modulation and coding course- lecture 9
Modulation and coding course- lecture 9
... error detection and correction codes
Lecture 9 7
Why using error correction coding?
Error performance vs. bandwidth
Power vs. bandwidth
Data rate vs. bandwidth
Capacity vs. bandwidth
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Digital Communications I:
Modulation and Coding Course
Period 3 -...
Modulation and coding course- lecture 10
... bits
Lecture 10 2
Last time, we talked about:
Channel coding
Linear block codes
The error detection and correction capability
Encoding and decoding
Hamming codes
Cyclic codes
Lecture ... Digital Communications I:
Modulation and Coding Course
Period 3 - 2007
Catharina Logothetis
Lecture 10
Lecture 10 10
Effective code rate
Initialize the memory before encoding...
Modulation and coding course- lecture 12
... 2007
Catharina Logothetis
Lecture 12
Lecture 12 5
Soft and hard decision decoding
In hard decision:
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Performance bounds …
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Modulation and coding course- lecture 11
... Modulation, Demodulation and
Coding Course
Period 3 - 2007
Catharina Logothetis
Lecture 11
Lecture 11 10
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Modulation and coding course- lecture 1
... signal
Baseband versus bandpass:
Bandwidth dilemma:
Bandlimited signals are not realizable!
Realizable signals have infinite bandwidth!
Baseband
signal
Bandpass
signal
Local oscillator
Lecture ... oscillator
Lecture 1 25
Bandwidth of signal …
Different definition of bandwidth:
a) Half-power bandwidth
b) Noise equivalent bandwidth
c) Null-to-null bandwidth
a) Fractional power c...
Modulation and coding course- lecture 2
... I:
Modulation and Coding Course
Period 3 – 200/
Catharina Logothetis
Lecture 2
Lecture 2 10
Encoding (PCM)
A uniform linear quantizer is called Pulse Code
Modulation (PCM).
Pulse code modulation ... density, random
process, linear systems and signal bandwidth.
Lecture 2 20
Spectra of PCM waveforms
Lecture 2 21
M-ary pulse modulation
M-ary pulse modulations categor...
Tài liệu Modulation and coding course- lecture 3 pptx
... non-uniform
Baseband modulation
Binary pulse modulation
M-ary pulse modulation
M-PAM (M-ay Pulse amplitude modulation)
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Step 2 – decision making
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Digital Communications I: Modulation
and Coding Course
Period 3 - 2007
Catharina Logothetis
Lecture 4
Lecture 4 20
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Digital Communications I:
Modulation and Coding Course
Period 3 - 2007
Catharina Logothetis
Lecture 5
Lecture 5 20
Eb/No figure of merit in digital
communications
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Last time we talked about:
Receiver structure
Impact of AWGN and ISI on the
transmitted signal
Optimum filter to maximize SNR
...
Digital Communication I: Modulation and Coding Course-Lecture 2 potx
... capability
Interference and noise immunity
Implementation cost and complexity
Digital Communications I:
Modulation and Coding Course
Term 3 – 2008
Catharina Logothetis
Lecture 2
Lecture 2 20
Spectra ... waveforms
Lecture 2 21
M-ary pulse modulation
M-ary pulse modulations category:
M-ary pulse-amplitude modulation (PAM)
M-ary pulse-position modulation (PPM)
...
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