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ofdmRK777.rar
This simulation simulate wireless Coded OFDM over mobile multipath fading channel. The model use QPSK, Reed-Solomon Channel Coding, and training based channel estimation.
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modQPSK.rar
describe a way to modulate a QPSK.evaluate the performance of Bit error rate base on the signal to noise ratio
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QPSK_TX_IQ_RX_REV1.rar
M-file models a QPSK RXTX at passband using a correlation receiver and low pass filters. This m-file is a revision of QPSK TXRX SYSTEM ANALYSIS published earlier.
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QPSK_chain.zip
Simulation of a baseband QPSK mod/demod:
TX : a pseudo random bit stream generation, Serial to parallel conversion, QPSK Mapping (Gray coding), Signal power computation
Channel : AWGN channel
RX: Soft Demapping / Hard Demapping, Plot constellations, ...
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Soft_demapping_QPSK.zip
soft Demapping QPSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter : needs I and Q components of QPSK symbols at the input
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Good_ver_Soft_demapping_QPSK.zip
good version of soft Demapping QPSK : LLR computation using Euclidian distance approache, Parallel-to-Serial converter, needs I and Q componets of QPSK symbols at the input
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demapping_soft_QPSK_good_version.zip
corrected version of Demapping QPSK : LLR computation using Euclidian distance approach, Parallel-to-Serial converter, needs I and Q componets of QPSK symbols at the input
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