gr::digital::ofdm_serializer_vcc Class Reference

Serializes complex modulations symbols from OFDM sub-carriersThis is the inverse block to the carrier_allocator_cvc. It outputs the complex data symbols as a tagged stream, discarding the pilot symbols. More...

#include <ofdm_serializer_vcc.h>

Inheritance diagram for gr::digital::ofdm_serializer_vcc:

List of all members.

Public Types
typedef boost::shared_ptr < ofdm_serializer_vcc >	sptr
Static Public Member Functions
static sptr	make (int fft_len, const std::vector< std::vector< int > > &occupied_carriers, const std::string &len_tag_key="frame_len", const std::string &packet_len_tag_key="", int symbols_skipped=0, const std::string &carr_offset_key="", bool input_is_shifted=true)
static sptr	make (const digital_ofdm_carrier_allocator_cvc_sptr &allocator, const std::string &packet_len_tag_key="", int symbols_skipped=0, const std::string &carr_offset_key="", bool input_is_shifted=true)

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Detailed Description

Serializes complex modulations symbols from OFDM sub-carriers

This is the inverse block to the carrier_allocator_cvc. It outputs the complex data symbols as a tagged stream, discarding the pilot symbols.

If given, two different tags are parsed: The first key (len_tag_key) specifies the number of OFDM symbols in the frame at the input. The second key (packet_len_tag_key) specifies the number of complex symbols that are coded into this frame. If given, this second key is then used at the output, otherwise, len_tag_key is used. If both are given, the packet length specifies the maximum number of output items, and the frame length specifies the exact number of consumed input items.

It is possible to correct a carrier offset in this function by passing another tag with said offset.

Input: Complex vectors of length fft_len Output: Complex scalars, in the same order as specified in occupied_carriers.

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Member Typedef Documentation

typedef boost::shared_ptr<ofdm_serializer_vcc> gr::digital::ofdm_serializer_vcc::sptr

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Member Function Documentation

static sptr gr::digital::ofdm_serializer_vcc::make	(	int	fft_len,
		const std::vector< std::vector< int > > &	occupied_carriers,
		const std::string &	len_tag_key = "frame_len",
		const std::string &	packet_len_tag_key = "",
		int	symbols_skipped = 0,
		const std::string &	carr_offset_key = "",
		bool	input_is_shifted = true
	)		[static]

Parameters:

fft_len	FFT length
occupied_carriers	See ofdm_carrier_allocator_cvc.
len_tag_key	The key of the tag identifying the length of the input frame in OFDM symbols.
packet_len_tag_key	The key of the tag identifying the number of complex symbols in this packet.
symbols_skipped	If the first symbol is not allocated as in occupied_carriers[0], set this
carr_offset_key	When this block should correct a carrier offset, specify the tag key of the offset here (not necessary if following an ofdm_frame_equalizer_vcvc)
input_is_shifted	If the input has the DC carrier on index 0 (i.e. it is not FFT shifted), set this to false

static sptr gr::digital::ofdm_serializer_vcc::make	(	const digital_ofdm_carrier_allocator_cvc_sptr &	allocator,
		const std::string &	packet_len_tag_key = "",
		int	symbols_skipped = 0,
		const std::string &	carr_offset_key = "",
		bool	input_is_shifted = true
	)		[static]

Parameters:

allocator	The carrier allocator block of which this shall be the inverse
packet_len_tag_key	The key of the tag identifying the number of complex symbols in this packet.
symbols_skipped	If the first symbol is not allocated as in occupied_carriers[0], set this
carr_offset_key	When this block should correct a carrier offset, specify the tag key of the offset here (not necessary if following an ofdm_frame_equalizer_vcvc)
input_is_shifted	If the input has the DC carrier on index 0 (i.e. it is not FFT shifted), set this to false

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The documentation for this class was generated from the following file:

• ofdm_serializer_vcc.h