sample_offset_cal Namespace Reference

Functions
def	txrx_app (serials, ref_node_idx, hub_serial, rate, freq, txgain, rxgain, numSamps, prefix_pad, postfix_pad, debug)
	Functions #. More...
def	find_corr_idx (waveRxA, waveRxB)
def	calibrate (corr_idx_vec, ssdr)
def	cleanup (sdrs, frame_len, m_rxStream, s_rxStream)
def	main ()
	Main #. More...

Variables
int	RF_RST_REG = 48
int	TDD_CONF_REG = 120
int	SCH_ADDR_REG = 136
int	SCH_MODE_REG = 140
int	TX_GAIN_CTRL = 88
int	FPGA_IRIS30_TRIGGERS = 44
tuple	FPGA_IRIS30_INCR_TIME = (1 << 2)
tuple	FPGA_IRIS30_DECR_TIME = (1 << 3)

Detailed Description

sample_offset_cal_prototype.py

** NOTE **
This script is used to test sample offset and calibration.

One-time calibration procedure to align samples from all radios in the base station

Example:
    python3 sample_offset_cal_prototype.py --filename="./data_in/calibrate_bs_radios.txt"

---------------------------------------------------------------------
 Copyright © 2018-2019. Rice University.
 RENEW OPEN SOURCE LICENSE: http://renew-wireless.org/license
---------------------------------------------------------------------

Function Documentation

calibrate()

def sample_offset_cal.calibrate	(		corr_idx_vec,
			ssdr
	)

Calibrate

Find correction factor between reference board and the rest:

Input:
    corr_idx_vec - vector of absolute correlation indexes for all boards
    ssdr         - sdr objects

Output:
    cal_coeff    - vector of sample index offsets from reference board

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cleanup()

def sample_offset_cal.cleanup	(		sdrs,
			frame_len,
			m_rxStream,
			s_rxStream
	)

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find_corr_idx()

def sample_offset_cal.find_corr_idx	(		waveRxA,
			waveRxB
	)

Find correlation indexes
Input:
    waveRxA - vector of IQ samples from RF chain A
    waveRxB - vector of IQ samples from RF chain B

Output:
    idx_mat - matrix with correlation indexes at all boards

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main()

def sample_offset_cal.main

(

)

Main #.

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txrx_app()

def sample_offset_cal.txrx_app	(		serials,
			ref_node_idx,
			hub_serial,
			rate,
			freq,
			txgain,
			rxgain,
			numSamps,
			prefix_pad,
			postfix_pad,
			debug
	)

Functions #.

Function to configure Iris boards, generate pilot to be transmitted,
write pilots to RAM, set up schedule (frame), transmit, and receive.

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Variable Documentation

FPGA_IRIS30_DECR_TIME

tuple sample_offset_cal.FPGA_IRIS30_DECR_TIME = (1 << 3)

FPGA_IRIS30_INCR_TIME

tuple sample_offset_cal.FPGA_IRIS30_INCR_TIME = (1 << 2)

FPGA_IRIS30_TRIGGERS

int sample_offset_cal.FPGA_IRIS30_TRIGGERS = 44

RF_RST_REG

int sample_offset_cal.RF_RST_REG = 48

           Registers              #

TDD Register Set

SCH_ADDR_REG

int sample_offset_cal.SCH_ADDR_REG = 136

SCH_MODE_REG

int sample_offset_cal.SCH_MODE_REG = 140

TDD_CONF_REG

int sample_offset_cal.TDD_CONF_REG = 120

TX_GAIN_CTRL

int sample_offset_cal.TX_GAIN_CTRL = 88