#include <channel.h>
Public Member Functions | |
| Correlated_Fading_Generator (double norm_doppler) | |
| Default constructor. | |
| virtual | ~Correlated_Fading_Generator () |
| Destructor. | |
| virtual void | set_norm_doppler (double norm_doppler) |
| Set normalized Doppler. | |
| virtual void | set_LOS_doppler (double relative_doppler) |
| Set relative Doppler (compared to the maximum Doppler) for the LOS component. | |
| virtual void | set_time_offset (int offset) |
| Set time offset in samples. | |
| virtual double | get_norm_doppler () const |
| Return normalized Doppler. | |
| virtual double | get_LOS_doppler () const |
| Get relative Doppler (compared to the maximum doppler) for the LOS component. | |
| virtual double | get_time_offset () const |
| Get time offset in samples. | |
| virtual void | shift_time_offset (int no_samples) |
| Shift generator time offset by a number of samples. | |
| virtual void | init ()=0 |
| Initialize the generator. | |
| virtual void | generate (int no_samples, cvec &output)=0 |
| Generate no_samples values from the fading process. | |
| void | set_LOS_power (double relative_power) |
| Set relative LOS power. | |
| virtual void | set_filter_length (int filter_length) |
| Set FIR filter length (for FIR fading generator). | |
| virtual void | set_doppler_spectrum (DOPPLER_SPECTRUM spectrum) |
| Set Doppler spectrum (for Rice fading generator). | |
| virtual void | set_no_frequencies (int no_freq) |
| Set number of sine frequencies (for Rice fading generator). | |
| virtual void | set_rice_method (RICE_METHOD method) |
| Set calculation method of Doppler frequencies and amplitudes (for Rice fading generator). | |
| double | get_LOS_power () const |
| Get relative power of LOS component (Rice factor). | |
| virtual int | get_filter_length () const |
| Set FIR filter length (for FIR fading generator). | |
| virtual DOPPLER_SPECTRUM | get_doppler_spectrum () const |
| Return Doppler spectrum (for Rice fading generator). | |
| virtual int | get_no_frequencies () const |
| Get number of sine frequencies (for Rice fading generator). | |
| virtual RICE_METHOD | get_rice_method () const |
| Get calculation method of Doppler frequencies and amplitudes (for Rice fading generator). | |
| cvec | generate (int no_samples) |
| Generate no_samples values from the fading process. | |
Protected Member Functions | |
| void | add_LOS (int idx, std::complex< double > &sample) |
| add LOS component to the sample with index idx | |
Protected Attributes | |
| double | n_dopp |
| Normalized maximum Doppler frequency. | |
| double | los_dopp |
| Relative Doppler on LOS component (0.7 by default). | |
| double | time_offset |
| Time offset in samples (time state in the generator). | |
| bool | init_flag |
| signals if generator is initialized or not | |
| double | los_power |
| Relative power of LOS component compared to diffuse component (K factor). | |
| double | los_diffuse |
| Diffuse component: sqrt(1 / (1 + los_power)). | |
| double | los_direct |
| Direct component: sqrt(los_power / (1 + los_power)). | |
Correlated fading generator class implements an abstract interface for a set of generators. Parameter that define the correlated fading process are the normalized Doppler and optionally the relative Doppler of a LOS component.
References:
1.5.8