Module rpps.sync.time.ed.el

Early-late TED - This requires SPS>=2 - Carrier independent

Functions

def el_nd(early, mid, late)

Expand source code

def el_nd(early, mid, late):
    """
        early, (mTm)       : near-peak sample (symbol)
        mid,  (mTm - Tm/2) : near-zero sample
        late, (mTm + Tm/2) : near-zero sample
    """
    return np.real(mid*(np.conj(late) - np.conj(early)))

early, (mTm) : near-peak sample (symbol) mid, (mTm - Tm/2) : near-zero sample late, (mTm + Tm/2) : near-zero sample

Classes

class EL_ND

Expand source code

class EL_ND(TED_ND):
    iSPS = 2
    Inputs = 3
    Lookahead = True
    Derivative = False

    def run(self):
        """
        samples[0] = late, (mTm + Tm/2) : near-zero sample
        samples[1] = mid,  (mTm - Tm/2) : near-zero sample
        samples[2] = early, (mTm)       : near-peak sample (symbol)
        """
        r_term = (self.samples[0].real - self.samples[2].real) * self.samples[1].real
        i_term = (self.samples[0].real - self.samples[2].real) * self.samples[1].iamg
        return r_term + i_term

Ancestors

• rpps.sync.time.ed._ed.TED_ND
• rpps.sync.time.ed._ed._TED

Class variables

var Derivative

var Inputs

var Lookahead

var iSPS

Methods

def run(self)

Expand source code

def run(self):
    """
    samples[0] = late, (mTm + Tm/2) : near-zero sample
    samples[1] = mid,  (mTm - Tm/2) : near-zero sample
    samples[2] = early, (mTm)       : near-peak sample (symbol)
    """
    r_term = (self.samples[0].real - self.samples[2].real) * self.samples[1].real
    i_term = (self.samples[0].real - self.samples[2].real) * self.samples[1].iamg
    return r_term + i_term

samples[0] = late, (mTm + Tm/2) : near-zero sample samples[1] = mid, (mTm - Tm/2) : near-zero sample samples[2] = early, (mTm) : near-peak sample (symbol)