sdr v0.0.9

Released November 12, 2023

Changes

• Added polyphase rational resampling in sdr.Resampler.
• Added discrete-time FIR differentiating filters in sdr.Differentiator.
• Added discrete-time IIR integrating filters in sdr.Integrator.
• Added sdr.percent(), sdr.ppm(), and sdr.ppb().
• Moved sdr.DDS functionality into sdr.NCO. Removed sdr.DDS.
• Added ability to seed the channel models.
• Added option to compute measurements along a specified axis.
• Added option to return measurements in decibels.
• Replaced pylint with ruff.
• Replaced black with ruff.
• Improved type annotations.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.8

Released September 4, 2023

Changes

• Added minimum-shift keying (MSK) in sdr.MSK.
• Added pulse shape customization to linear modulations.
• Added theoretic detection performance of a matched filter in sdr.ReplicaCorrelator and an energy detector
  in sdr.EnergyDetector.
• Added Albersheim's minimum required SNR approximation in sdr.albersheim().
• Added plotting of receiver operating characteristic (ROC) curves in sdr.plot.roc().
• Added plotting of probability of detection curves in sdr.plot.p_d().
• Added plotting of phase trees of continuous-phase modulation (CPM) in sdr.plot.phase_tree().
• Added sensible time and frequency units to plots.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.7

Released August 27, 2023

Changes

• Added generic linear modulation schemes in sdr.LinearModulation.
• Added $\pi/M$ PSK modulation in sdr.PiMPSK.
• Added offset QPSK modulation in sdr.OQPSK.
• Added rectangular pulse shapes in sdr.rectangular().
• Added half-sine pulse shapes in sdr.half_sine().
• Added pulse shaping in linear modulations. Now map_symbols() and decide_symbols() operate on 1 sample per symbol
  and modulate() and demodulate() operate on multiple samples per symbol.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.6

Released August 20, 2023

Changes

• Added raster plots in sdr.plot.raster().
• Added eye diagrams in sdr.plot.eye().
• Added upsampling (without anti-aliasing filtering) in sdr.upsample().
• Added downsampling (without anti-aliasing filtering) in sdr.downsample().
• Added wavelength calculation in sdr.wavelength().
• Supported real sinusoid mixing.
• Supported returning measurements in dB.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.5

Released August 13, 2023

Changes

• Added polyphase FIR decimator in sdr.Decimator().
• Added multirate FIR filter design in sdr.multirate_taps().
• Added polyphase decomposition in sdr.polyphase_matrix().
• Added linear to decibel conversion in sdr.db().
• Added decibel to linear conversion in sdr.linear().
• Added linear and zero-order hold polyphase FIR interpolators.
• Added a state property to FIR filters.
• Added a flush() method to FIR filters.
• Added support for passing filter objects into filter plotting functions.
• Added ability to center or offset a time-domain plot.
• Improved the string representation of classes.
• Renamed sdr.plot.frequency_response() to sdr.plot.magnitude_response().
• Removed superfluous methods like FIR.filter() and replaced with FIR.__call__().

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.4

Released August 6, 2023

Changes

• Added error vector magnitude measurement in sdr.evm().
• Added complex mixing (frequency translation) in sdr.mix().
• Added real passband to complex baseband conversion in sdr.to_complex_bb().
• Added complex baseband to real passband conversion in sdr.to_real_pb().
• Added binary and bipolar Barker sequences in sdr.barker().
• Added complex-valued Zadoff-Chu sequences in sdr.zadoff_chu().
• Added theoretical BER/SER for DE-PSK.
• Fixed theoretical BER/SER for PSK.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.3

Released July 30, 2023

Changes

• Added PSK modulation in sdr.PSK.
• Added symbol mapping: sdr.binary_code(), sdr.gray_code().
• Added differential codes: sdr.diff_encode(), sdr.diff_decode().
• Added a FIR interpolating filter in sdr.FIRInterpolator.
• Added error rate measurement in sdr.ErrorRate.
• Added signal measurement functions: sdr.energy(), sdr.peak_power(), sdr.average_power(), sdr.papr(), sdr.peak_voltage(), sdr.rms_voltage(), sdr.crest_factor().
• Added channel models: sdr.bec(), sdr.bsc(), sdr.dmc().
• Added signal impairments: sdr.awgn(), sdr.frequency_offset(), sdr.sample_rate_offset(), sdr.iq_imbalance().
• Added probability functions: sdr.Q(), sdr.Qinv().
• Added link budget functions: sdr.fpsl(), sdr.parabolic_antenna().
• Added channel capacity functions: sdr.awgn_capacity(), sdr.bec_capacity(), sdr.bsc_capacity().
• Added SNR conversion functions: sdr.ebn0_to_esn0(), sdr.ebn0_to_snr(), sdr.esn0_to_ebn0(), sdr.esn0_to_snr(), sdr.snr_to_ebn0(), sdr.snr_to_esn0().
• Added plotting functions for modulation: sdr.plot.ber(), sdr.plot.ser(), sdr.plot.constellation(), sdr.plot.symbol_map().
• Added more filter plotting functions: sdr.plot.phase_response(), sdr.plot.phase_delay().

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.2

Released July 16, 2023

Changes

• Added finite impulse response (FIR) filters in sdr.FIR.
• Added pulse shapes: sdr.raised_cosine(), sdr.root_raised_cosine(), sdr.gaussian().
• Added plotting helper functions in sdr.plot:
  • sdr.plot.time_domain()
  • sdr.plot.periodogram(), sdr.plot.spectrogram()
  • sdr.plot.filter(), sdr.plot.frequency_response, sdr.plot.group_delay(),
    sdr.plot.impulse_response(), sdr.plot.step_response(), sdr.plot.zeros_poles()
• Added measurement functions: sdr.papr(), sdr.crest_factor().
• Added bit packing and unpacking functions: sdr.pack(), sdr.unpack().
• Added hexdump helper function in sdr.hexdump().
• Improved type annotations.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.1

Released July 9, 2023

Changes

• Added Farrow arbitrary resampling in sdr.FarrowResampler. (#1)
• Added infinite impulse response (IIR) filters in sdr.IIR. (#3)
• Added numerically-controlled oscillators (NCO) in sdr.NCO. (#4)
• Added direct digital synthesizers (DDS) in sdr.DDS. (#4)
• Added 2nd order, proportional-plus-integrator loop filters in sdr.LoopFilter. (#4)
• Added closed-loop PLL analysis in sdr.ClosedLoopPLL. (#5)

Contributors

• Matt Hostetter (@mhostetter)