MPSK on OFDM system program

Speaker:沈遠博

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OUTLINE1.OFDM system theory.2.MPSK system simulink.3.OFDM system simulink.4.Results comparison.5.Conclusion.

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OFDM THEORY

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OFDM THEORY

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OFDM THEORY

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OFDM THEORY

Serial-to-Parallel

Converter

SignalMapper

IFFTParallel-to-Serial

Converter

GuardIntervalInsertion

Serial Data Input

x bits0d

1d

1nd

0s

1s

1ns

D/A &Low pass

Filter

Up-Converter

Down-Converter

A/D Guard

IntervalRemoval

Serial-to-Parallel

ConverterFFT

One-tapEqualizer

SignalDemapper

Parallel-to-Serial

Converter

Serial Data

Output

0dx bits

1d

1ˆ

nd

0s1s

1ˆ ns

Channel

)(ts

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Serial-to-Parallel

Converter

SignalMapper

IFFTParallel-to-Serial

Converter

GuardIntervalInsertion

Serial Data Input

x bits0d

1d

1nd

0s

1s

1ns

D/A &Low pass

Filter

Up-Converter

Down-Converter

A/D Guard

IntervalRemoval

Serial-to-Parallel

ConverterFFT

One-tapEqualizer

SignalDemapper

Parallel-to-Serial

Converter

Serial Data

Output

0dx bits

1d

1ˆ

nd

0s1s

1ˆ ns

Channel

)(ts

MPSK

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M-ARY PHASE SHIFT KEYING(M-PSK)

M-PSK signal can be represented by this

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M-ARY PHASE SHIFT KEYING(MPSK)

M-PSK 星座圖 9

QPSK

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8PSK

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8PSK

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QPSK

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CONCLUSION

1. The next generation communication system will join OFDM to their system.

2. I’ve made an MPSK simulink program in the OFDM program.

3. If the noise is added we can use some skill to reduce them.

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