sdr v0.0.14

Released February 2, 2024

Changes

• Added support for Python 3.12.
• Added support for NumPy 1.26.
• Pinned galois to v0.3.8.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.13

Released January 28, 2024

Changes

• Added Fibonacci LFSRs in sdr.FLFSR.
• Added Galois LFSRs in sdr.GLFSR.
• Added maximum-length sequences in sdr.m_sequence().
• Added additive scrambling in sdr.AdditiveScrambler.
• Added interleavers in sdr.Interleaver and sdr.BlockInterleaver.
• Added generic continuous-phase modulation in sdr.CPM.
• Added channel models sdr.BinarySymmetricChannel, sdr.BinaryErasureChannel, and sdr.DiscreteMemorylessChannel.
• Added the Berlekamp-Massey LFSR synthesis algorithm in sdr.berlekamp_massey().
• Added persistence plots in sdr.plot.raster(), sdr.plot.eye(), and sdr.plot.constellation().
• Added galois dependency.
• Renamed sdr.barker() to sdr.barker_code().
• Renamed sdr.hadamard() to sdr.hadamard_code().
• Renamed sdr.walsh() to sdr.walsh_code().
• Renamed sdr.zadoff_chu() to sdr.zadoff_chu_sequence().

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.12

Released January 7, 2024

Changes

• Added automatic gain control in sdr.AGC.
• Added fractional delay FIR filters in sdr.FractionalDelay.
• Added generic polyphase FIR filters in sdr.PolyphaseFIR.
• Added polyphase FIR channelizers in sdr.Channelizer.
• Added linear, quadratic, and quartic polynomials to sdr.FarrowResampler.
• Added FarrowResampler.flush() method.
• Added offset keyword argument sdr.plot.impulse_response().
• Added Numba dependency with minimum version 0.55.
• Modified design_multirate_taps() and polyphase_decompose() APIs.
• Enabled Kaiser-method prototype filter design using polyphase_order and atten keyword arguments to
  polyphase FIR classes.
• Standardized interpolation, decimation, rate, and delay properties of polyphase FIR classes.
• Supported span of 1 for all pulse shape functions.
• Fixed bug in phase of first NCO output sample.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.11

Released December 14, 2023

Changes

• Added heuristic phase error detector in sdr.PED.
• Added maximum-likelihood PED in sdr.MLPED.
• Added Hadamard codes in sdr.hadamard().
• Added Walsh codes in sdr.walsh().
• Added moving average FIR filter in sdr.MovingAverager.
• Added leaky integrating IIR filter in sdr.LeakyIntegrator.
• Added FIR.group_delay() method.
• Added FIR.phase_delay() method.
• Reworked {FIR|IIR}.frequency_response() and removed {FIR|IIR}.frequency_response_log().
• Added support for explicit time axes in sdr.plot.time_domain(t, x).
• Added y_axis option to frequency-domain plots.
• Added x_axis="auto" option to frequency-domain filter plots.
• Added NCO output formats of sine, cosine, complex exponential, or accumulated phase.
• Improved bandwidth of discrete-time differentiator in sdr.Differentiator.
• Added backward, trapezoidal, and forward discrete-time integration methods in sdr.Integrator.
• Updated Jupyter notebook examples.

Contributors

• Matt Hostetter (@mhostetter)

sdr v0.0.10

Released November 19, 2023

Changes

• Added window-based FIR filter design in sdr.design_lowpass_fir(), sdr.design_highpass_fir(), sdr.design_bandpass_fir(), and sdr.design_bandstop_fir().
• Added fractional delay FIR filter design in sdr.design_frac_delay_fir().
• Added ability to measure Euclidean distance in sdr.euclidean().
• Added ability to measure Hamming distance in sdr.hamming().
• Renamed sdr.multirate_taps() to sdr.design_multirate_fir().
• Renamed sdr.polyphase_matrix() to sdr.polyphase_decompose().

Contributors

• Matt Hostetter (@mhostetter)

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)