DoBeamWeights Class Reference

#include <dobeamweights.h>

Inheritance diagram for DoBeamWeights:

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Public Member Functions
	DoBeamWeights (Config *in_config, int tid, PtrGrid< kFrameWnd, kMaxUEs, complex_float > &csi_buffers, Table< complex_float > &calib_dl_buffer, Table< complex_float > &calib_ul_buffer, Table< complex_float > &calib_dl_msum_buffer, Table< complex_float > &calib_ul_msum_buffer, PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &ul_beam_matrices_, PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &dl_beam_matrices_, PhyStats *in_phy_stats, Stats *stats_manager)
	~DoBeamWeights () override
EventData	Launch (size_t tag) override
Public Member Functions inherited from Doer
virtual bool	TryLaunch (moodycamel::ConcurrentQueue< EventData > &task_queue, moodycamel::ConcurrentQueue< EventData > &complete_task_queue, moodycamel::ProducerToken *worker_ptok)
virtual EventData	Launch (size_t tag, EventType event_type)

Private Member Functions
void	ComputePartialCsiBeams (size_t tag)
float	ComputePrecoder (size_t frame_id, size_t cur_sc_id, const arma::cx_fmat &mat_csi, const arma::cx_fvec &calib_sc_vec, const float noise, complex_float *ul_beam_mem, complex_float *dl_beam_mem)
void	ComputeCalib (size_t frame_id, size_t sc_id, arma::cx_fvec &calib_sc_vec)
void	ComputeFullCsiBeams (size_t tag)
void	Predict (size_t offset)

Private Attributes
PtrGrid< kFrameWnd, kMaxUEs, complex_float > &	csi_buffers_
complex_float *	pred_csi_buffer_
Table< complex_float > &	calib_dl_buffer_
Table< complex_float > &	calib_ul_buffer_
Table< complex_float > &	calib_dl_msum_buffer_
Table< complex_float > &	calib_ul_msum_buffer_
PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &	ul_beam_matrices_
PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &	dl_beam_matrices_
DurationStat *	duration_stat_
complex_float *	csi_gather_buffer_
complex_float *	calib_gather_buffer_
std::unique_ptr< arma::cx_fvec >	calib_sc_vec_ptr_
PhyStats *	phy_stats_
arma::uvec	ext_ref_id_
size_t	num_ext_ref_

Additional Inherited Members
Protected Member Functions inherited from Doer
	Doer (Config *in_config, int in_tid)
virtual	~Doer ()=default
Protected Attributes inherited from Doer
Config *	cfg_
int	tid_

Constructor & Destructor Documentation

DoBeamWeights()

DoBeamWeights::DoBeamWeights	(	Config *	in_config,
		int	tid,
		PtrGrid< kFrameWnd, kMaxUEs, complex_float > &	csi_buffers,
		Table< complex_float > &	calib_dl_buffer,
		Table< complex_float > &	calib_ul_buffer,
		Table< complex_float > &	calib_dl_msum_buffer,
		Table< complex_float > &	calib_ul_msum_buffer,
		PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &	ul_beam_matrices_,
		PtrGrid< kFrameWnd, kMaxDataSCs, complex_float > &	dl_beam_matrices_,
		PhyStats *	in_phy_stats,
		Stats *	stats_manager
	)

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~DoBeamWeights()

DoBeamWeights::~DoBeamWeights ( )

override

Member Function Documentation

ComputeCalib()

void DoBeamWeights::ComputeCalib ( size_t  frame_id, size_t  sc_id, arma::cx_fvec &  calib_sc_vec  )

private

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ComputeFullCsiBeams()

void DoBeamWeights::ComputeFullCsiBeams ( size_t  tag )

private

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ComputePartialCsiBeams()

void DoBeamWeights::ComputePartialCsiBeams ( size_t  tag )

private

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ComputePrecoder()

float DoBeamWeights::ComputePrecoder ( size_t  frame_id, size_t  cur_sc_id, const arma::cx_fmat &  mat_csi, const arma::cx_fvec &  calib_sc_vec, const float  noise, complex_float *  ul_beam_mem, complex_float *  dl_beam_mem  )

private

Compute the uplink mMIMO detector matrix and/or the downlink mMIMO precoder using this CSI matrix and calibration buffer

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Launch()

EventData DoBeamWeights::Launch ( size_t  tag )

overridevirtual

Do Beamweight Computation task for one subcarrier with all pilots in a frame

Parameters

tid

task thread index, used for selecting task ptok

offset

offset of the subcarrier in csi_buffer_ Buffers: csi_buffer_, precoder_buffer_ Input buffer: csi_buffer_ Output buffer: precoder_buffer_ Offsets: csi_buffer_, precoder_buffer_: dim1: frame index * FFT size + subcarrier index in the current frame Event offset: offset Description: perform beamweight calculation using csi_buffer_ and store results in precoder_buffer_ add an event to the message queue to infrom main thread the completion of this task

Reimplemented from Doer.

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Predict()

void DoBeamWeights::Predict ( size_t  offset )

private

Do prediction task for one subcarrier

Parameters

tid

task thread index, used for selecting task ptok

offset

offset of the subcarrier in csi_buffer_ Buffers: csi_buffer_, pred_csi_buffer_, precoder_buffer_ Input buffer: csi_buffer_ Output buffer: precoder_buffer_ Intermediate buffer: pred_csi_buffer_ Offsets: csi_buffer_: dim1: frame index * FFT size + subcarrier index in the current frame pred_csi_buffer: dim1: subcarrier index in the current frame precoder_buffer_: dim1: (frame index + 1) * FFT size + subcarrier index in the current frame Event offset: offset Description: predict CSI (copy CSI from the current frame if prediction is based on stale CSI) perform pseudo-inverse (pinv) on pred_csi_buffer_ and store results in precoder_buffer_ add an event to the message queue to infrom main thread the completion of this task

Member Data Documentation

calib_dl_buffer_

Table<complex_float>& DoBeamWeights::calib_dl_buffer_

private

calib_dl_msum_buffer_

Table<complex_float>& DoBeamWeights::calib_dl_msum_buffer_

private

calib_gather_buffer_

complex_float* DoBeamWeights::calib_gather_buffer_

private

calib_sc_vec_ptr_

std::unique_ptr<arma::cx_fvec> DoBeamWeights::calib_sc_vec_ptr_

private

calib_ul_buffer_

Table<complex_float>& DoBeamWeights::calib_ul_buffer_

private

calib_ul_msum_buffer_

Table<complex_float>& DoBeamWeights::calib_ul_msum_buffer_

private

csi_buffers_

PtrGrid<kFrameWnd, kMaxUEs, complex_float>& DoBeamWeights::csi_buffers_

private

csi_gather_buffer_

complex_float* DoBeamWeights::csi_gather_buffer_

private

dl_beam_matrices_

PtrGrid<kFrameWnd, kMaxDataSCs, complex_float>& DoBeamWeights::dl_beam_matrices_

private

duration_stat_

DurationStat* DoBeamWeights::duration_stat_

private

ext_ref_id_

arma::uvec DoBeamWeights::ext_ref_id_

private

num_ext_ref_

size_t DoBeamWeights::num_ext_ref_

private

phy_stats_

PhyStats* DoBeamWeights::phy_stats_

private

pred_csi_buffer_

complex_float* DoBeamWeights::pred_csi_buffer_

private

ul_beam_matrices_

PtrGrid<kFrameWnd, kMaxDataSCs, complex_float>& DoBeamWeights::ul_beam_matrices_

private

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

• src/agora/dobeamweights.h
• src/agora/dobeamweights.cc