Overview

Deinterleaves the complex floating point vector and return the imaginary part (quadrature) of the samples.

Dispatcher Prototype

void volk_32fc_deinterleave_image_32f(float* qBuffer, const lv_32fc_t* complexVector,
unsigned int num_points) 

Inputs

• complexVector: The complex input vector.
• num_points: The number of complex data values to be deinterleaved.

Outputs

• qBuffer: The Q buffer output data.

Example Generate complex numbers around the top half of the unit circle and extract all of the imaginary parts to a float buffer.

int N = 10;
unsigned int alignment = volk_get_alignment();
lv_32fc_t* in  = (lv_32fc_t*)volk_malloc(sizeof(lv_32fc_t)*N, alignment);
float* im = (float*)volk_malloc(sizeof(float)*N, alignment);
 
for(unsigned int ii = 0; ii < N; ++ii){
    float real = 2.f * ((float)ii / (float)N) - 1.f;
    float imag = std::sqrt(1.f - real * real);
    in[ii] = lv_cmake(real, imag);
}
 
volk_32fc_deinterleave_imag_32f(im, in, N);
 
printf("          imaginary part\n");
for(unsigned int ii = 0; ii < N; ++ii){
    printf("out(%i) = %+.1f\n", ii, im[ii]);
}
 
volk_free(in);
volk_free(im);