def VCg2VCl(VCg, Tt, Tr):
""" global reference frame to local reference frame
Parameters
----------
VCg : VectChannel global
Tt : Tx rotation matrix
Tr : Rx rotation matrix
Returns
-------
VCl : VectChannel (local)
"""
import copy
VCl = copy.deepcopy(VCg)
freq = VCl.freq
Rt, tangl = BTB_tx(VCg.tang, Tt)
Rr, rangl = BTB_rx(VCg.rang, Tr)
VCl.tang = tangl
VCl.rang = rangl
uf = np.ones(VCg.nfreq)
r0 = np.outer(Rr[0, 0, :], uf)
r1 = np.outer(Rr[0, 1, :], uf)
# print "shape r0 = ",np.shape(r0)
# print "shape VCg.Ctt.y = ",np.shape(VCg.Ctt.y)
# print "shape r1 = ",np.shape(r1)
# print "shape VCg.Cpt.y = ",np.shape(VCg.Cpt.y)
t00 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t01 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rr[1, 0, :], uf)
r1 = np.pouter(Rr[1, 1, :], uf)
t10 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t11 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rt[0, 0, :], uf)
r1 = np.outer(Rt[1, 0, :], uf)
Cttl = t00 * r0 + t01 * r1
Cptl = t10 * r0 + t11 * r1
r0 = np.outer(Rt[0, 1, :], uf)
r1 = np.outer(Rt[1, 1, :], uf)
Ctpl = t00 * r0 + t01 * r1
Cppl = t10 * r0 + t11 * r1
VCl.Ctt = bs.FUsignal(freq, Cttl)
VCl.Ctp = bs.FUsignal(freq, Ctpl)
VCl.Cpt = bs.FUsignal(freq, Cptl)
VCl.Cpp = bs.FUsignal(freq, Cppl)
return VCl
def VCg2VCl(VCg, Tt, Tr):
""" global reference frame to local reference frame
Parameters
----------
VCg : VectChannel global
Tt : Tx rotation matrix
Tr : Rx rotation matrix
Returns
-------
VCl : VectChannel (local)
"""
import copy
VCl = copy.deepcopy(VCg)
freq = VCl.freq
Rt, tangl = BTB_tx(VCg.tang, Tt)
Rr, rangl = BTB_rx(VCg.rang, Tr)
VCl.tang = tangl
VCl.rang = rangl
uf = np.ones(VCg.nfreq)
r0 = np.outer(Rr[0, 0, :], uf)
r1 = np.outer(Rr[0, 1, :], uf)
# print "shape r0 = ",np.shape(r0)
# print "shape VCg.Ctt.y = ",np.shape(VCg.Ctt.y)
# print "shape r1 = ",np.shape(r1)
# print "shape VCg.Cpt.y = ",np.shape(VCg.Cpt.y)
t00 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t01 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rr[1, 0, :], uf)
r1 = np.pouter(Rr[1, 1, :], uf)
t10 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t11 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rt[0, 0, :], uf)
r1 = np.outer(Rt[1, 0, :], uf)
Cttl = t00 * r0 + t01 * r1
Cptl = t10 * r0 + t11 * r1
r0 = np.outer(Rt[0, 1, :], uf)
r1 = np.outer(Rt[1, 1, :], uf)
Ctpl = t00 * r0 + t01 * r1
Cppl = t10 * r0 + t11 * r1
VCl.Ctt = bs.FUsignal(freq, Cttl)
VCl.Ctp = bs.FUsignal(freq, Ctpl)
VCl.Cpt = bs.FUsignal(freq, Cptl)
VCl.Cpp = bs.FUsignal(freq, Cppl)
return VCl
def Cg2Cl(Cg, Tt, Tr):
""" global reference frame to local reference frame
Parameters
----------
Cg : Ctilde global
Tt : Tx rotation matrix
Tr : Rx rotation matrix
Returns
-------
Cl : Ctilde local
Examples
--------
"""
import copy
# don't loose the global channel
Cl = copy.deepcopy(Cg)
# get frequency axes
fGHz = Cl.fGHz
# get angular axes
Rt, tangl = BTB_tx(Cg.tang, Tt)
Rr, rangl = BTB_rx(Cg.rang, Tr)
VCl.tang = tangl
VCl.rang = rangl
uf = np.ones(VCg.nfreq)
r0 = np.outer(Rr[0, 0, :], uf)
r1 = np.outer(Rr[0, 1, :], uf)
# print "shape r0 = ",np.shape(r0)
# print "shape VCg.Ctt.y = ",np.shape(VCg.Ctt.y)
# print "shape r1 = ",np.shape(r1)
# print "shape VCg.Cpt.y = ",np.shape(VCg.Cpt.y)
t00 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t01 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rr[1, 0, :], uf)
r1 = np.pouter(Rr[1, 1, :], uf)
t10 = r0 * VCg.Ctt.y + r1 * VCg.Cpt.y
t11 = r0 * VCg.Ctp.y + r1 * VCg.Cpp.y
r0 = np.outer(Rt[0, 0, :], uf)
r1 = np.outer(Rt[1, 0, :], uf)
Cttl = t00 * r0 + t01 * r1
Cptl = t10 * r0 + t11 * r1
r0 = np.outer(Rt[0, 1, :], uf)
r1 = np.outer(Rt[1, 1, :], uf)
Ctpl = t00 * r0 + t01 * r1
Cppl = t10 * r0 + t11 * r1
VCl.Ctt = bs.FUsignal(fGHz, Cttl)
VCl.Ctp = bs.FUsignal(fGHz, Ctpl)
VCl.Cpt = bs.FUsignal(fGHz, Cptl)
VCl.Cpp = bs.FUsignal(fGHz, Cppl)
return VCl
