AWGN信道 Resources

Showing items tagged with "AWGN信道"

This experimental report elucidates the principles of wireless communication system simulation, focusing on two primary tasks: performance comparison of BPSK modulation over AWGN and Rayleigh channels, and analysis of CDMA spread spectrum multi-user systems. The report details fundamental theories and includes commented MATLAB source code in the appendix, demonstrating practical implementation using communication toolbox functions for modulation, channel modeling, and BER analysis.

MATLAB 256 views Tagged
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This example demonstrates 4QPSK modulation/demodulation implementation in MATLAB, including transmission through an AWGN channel. Using Monte Carlo simulation methodology, it calculates bit error rate performance and generates corresponding performance curves. Suitable for algorithm research and academic coursework, featuring practical code implementation with key functions like pskmod(), pskdemod(), and awgn().

MATLAB 249 views Tagged
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This implementation presents an adaptive receiver designed for Direct Sequence Spread Spectrum (DS-SS) systems operating in AWGN channels. The adaptive receiver module is modified from the LMS adaptive filter block in the DSP Blockset, implementing MMSE criteria through adaptive filtering techniques. For DS-SS signal reception, the adaptive filter requires multi-rate operation where the input sampling rate equals the chip rate and the output sampling rate equals the symbol rate. These two rates are related through the processing gain (PG) parameter, which determines the spreading factor. The implementation handles rate conversion through proper decimation and interpolation techniques, ensuring optimal symbol detection while mitigating noise effects through the MMSE criterion.

MATLAB 273 views Tagged
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