diff options
Diffstat (limited to 'gr-digital/include/digital_costas_loop_cc.h')
| -rw-r--r-- | gr-digital/include/digital_costas_loop_cc.h | 47 |
1 files changed, 20 insertions, 27 deletions
diff --git a/gr-digital/include/digital_costas_loop_cc.h b/gr-digital/include/digital_costas_loop_cc.h index 4aab22fb45..67cfd6d5a5 100644 --- a/gr-digital/include/digital_costas_loop_cc.h +++ b/gr-digital/include/digital_costas_loop_cc.h @@ -28,13 +28,21 @@ #include <gri_control_loop.h> #include <stdexcept> #include <fstream> +#include <digital_api.h> + +class digital_costas_loop_cc; +typedef boost::shared_ptr<digital_costas_loop_cc> digital_costas_loop_cc_sptr; + +DIGITAL_API digital_costas_loop_cc_sptr +digital_make_costas_loop_cc (float loop_bw, int order + ) throw (std::invalid_argument); /*! * \brief A Costas loop carrier recovery module. - * \ingroup sync_blk - * \ingroup digital + * \ingroup synchronizers_blk * + * \details * The Costas loop locks to the center frequency of a signal and * downconverts it to baseband. The second (order=2) order loop is * used for BPSK where the real part of the output signal is the @@ -49,31 +57,6 @@ * processing, pp. 20-36, 2002. * * http://rfdesign.com/images/archive/0102Feigin20.pdf - * - * \param loop_bw internal 2nd order loop bandwidth (~ 2pi/100) - * \param order the loop order, either 2, 4, or 8 - */ - -#include <digital_api.h> - -class digital_costas_loop_cc; -typedef boost::shared_ptr<digital_costas_loop_cc> digital_costas_loop_cc_sptr; - - -DIGITAL_API digital_costas_loop_cc_sptr -digital_make_costas_loop_cc (float loop_bw, int order - ) throw (std::invalid_argument); - - -/*! - * \brief Carrier tracking PLL for QPSK - * \ingroup sync_blk - * input: complex; output: complex - * <br>The Costas loop can have two output streams: - * stream 1 is the baseband I and Q; - * stream 2 is the normalized frequency of the loop - * - * \p order must be 2, 4, or 8. */ class DIGITAL_API digital_costas_loop_cc : public gr_sync_block, public gri_control_loop { @@ -83,6 +66,16 @@ class DIGITAL_API digital_costas_loop_cc : public gr_sync_block, public gri_cont int d_order; + /*! + * \brief Carrier tracking PLL for QPSK + * input: complex; output: complex + * <br>The Costas loop can have two output streams: + * stream 1 is the baseband I and Q; + * stream 2 is the normalized frequency of the loop + * + * \param loop_bw internal 2nd order loop bandwidth (~ 2pi/100) + * \param order the loop order, either 2, 4, or 8 + */ digital_costas_loop_cc (float loop_bw, int order ) throw (std::invalid_argument); |