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Physical downlink control channel

- example
`[sym,info] = ltePDCCH(enb,cw)`

`[sym,info] = ltePDCCH(enb,cw,NREG)`

`[sym,info] = ltePDCCH(enb,cw,NREG,CCEGAINS)`

`[`

returns
an `sym`

,`info`

]
= ltePDCCH(`enb`

,`cw`

)`NRE`

-by-`CellRefP`

complex matrix, `sym`

,
of modulation symbols given the input bit vector `cw`

.

The function returns a matrix (`sym`

) of
complex modulation symbols generated by the set of Physical Downlink
Control Channels (PDCCH) in a subframe. The channel processing includes
the stages of scrambling, QPSK modulation, layer mapping and precoding,
followed by REG interleaving and cyclic shifting. For a given input
bit vector (typically the PDCCH multiplex), the output matrix `sym`

contains
the QPSK symbols in column-wise antenna form. Any input bits with
value < 0 are turned into `<NIL> ('0')`

symbols.
The optional structure `info`

returns control resourcing
information about the output symbols (see `ltePDCCHInfo`

for
details).

`lteDCIEncode`

| `ltePDCCHDecode`

| `ltePDCCHIndices`

| `ltePDCCHInfo`

| `ltePDCCHInterleave`

| `ltePDCCHPRBS`

| `ltePDCCHSearch`

| `ltePDCCHSpace`

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