Simulation of Multipath Channels with Code Implementation

When simulating multipath channels for input symbols, the following parameters must be specified: - Input symbols are represented as a row matrix containing real or complex values, typically generated using modulation schemes like QPSK or 16-QAM. - The symbol rate is %fs, which determines the sampling frequency and timing parameters in the simulation code. - Doppler shift %fd is implemented using frequency offset compensation algorithms, often modeled with complex exponential multiplication in time domain. - The number of multipath components is %n_delay, defining the complexity of the channel impulse response model. - Delay times for each path are specified as %t_delay, requiring precise sample-time alignment in digital simulation through interpolation techniques. - Power values for each path are given in dB as %p_delay, which are converted to linear scale for amplitude weighting in the channel model. The simulation typically involves creating a channel object with these parameters, then applying it to input symbols using convolution or filtering operations. The implementation may include Rayleigh or Rician fading models with proper normalization to maintain signal power integrity.