multi-channel-systems

This repository contains MATLAB files and functions to simulate multiple types of radio communication models. These models include Rayleigh- and Rice-channels.

All simulations will generate a fixed number of random bits which will be transmitted over the two types of channel models and received with varying Signal-to-Noise-Ratios (SNR).

The performance of these channels will then be evaluated by the received bit errors through the bit error rate (BER) plotted over the SNRs.

Table of Contents

• How to use
• Types of simulations
  • Simulation A
  • Simulation B
  • Simulation C

How to use

1. git clone this repository
2. Open one of the simulation .m files in your directory with MATLAB
3. Run the file in MATLAB

The simulation will take a couple of seconds to plot the results. For better results change the nBitsPerLoop under the % RANDOM BIT GENERATION PARAMETERS to 10e3. Keep in mind that this will significantly increase the simulation time.

Types of simulations

The simulations are based on a simple radio communication model consisiting of a % TRANSMITTER, % RADIO CHANNEL and a % RECEIVER.

• The % TRANSMITTER generates random bits and performs an I/Q modulation on these random bits.

• The % RADIO CHANNEL simulates either single path or mulipath Rayleigh-/Rice Fading channels.

• The % RECEIVER receives the signal path/s and can perform different combining methods depending on the simulation type.

Simulation A

SISO: Single Input Single Output

Rice-channel without antenna diversity over varying K-factors.

Simulation B

SIMO: Single Input Multiple Output

Rice-channel with a fixed K=5 over varying degrees of antenna diversity using the MRC-Method.

Rayleigh-channel (K=0) over varying degrees of antenna diversity using the MRC-Method.

Simulation C

SIMO: Single Input Multiple Output

Rayleigh-channel (K=0) with fixed antenna diversity (Nr=2) over different antenna combining methods.