You can extend your single-user WCDMA communication link to a multi-user communication link by using a MUX (multiplexer) and DEMUX (demultiplexer) before and after the AWGN channel. Here are the key steps and parameters to change:
Steps to Implement Multi-User WCDMA Communication Link
- Define Multiple Users: Each user will have their own data stream, PN sequence, and QPSK modulator.
- Multiplex the Users: Use a MUX to combine the multiple user data streams into a single stream before the AWGN channel.
- Add AWGN Channel: The combined signal will pass through the AWGN channel.
- Demultiplex the Users: Use a DEMUX to separate the combined signal back into individual user signals after the AWGN channel.
- Process Each User Signal: Each user signal will be processed individually through their respective QPSK demodulator and PN sequence despreader.
Key Parameters to Change
- Number of Users: Define the number of users in your system.
- PN Sequences: Each user should have a unique PN sequence to ensure orthogonality and minimize interference.
- Data Streams: Generate separate data streams for each user.
- Multiplexer and Demultiplexer: Use a MUX to combine the user data streams before transmission and a DEMUX to separate them after reception.
Hope it helps!
