Signal Processing Library

Basic Operators

name	description
aw_sin	Sine function
aw_cos	Cosine function
aw_tan	Tangent function
aw_arctan	Arc-tangent function
aw_exp	Exponential
aw_log	Natural logarithm
aw_vco	Voltage controlled oscillator
aw_abs	Absolute value and complex magnitude
aw_sum	Sum of an array of elements
aw_cumsum	Cumulative sum along different dimensions of an array
aw_max	Maximum value of a vector
aw_min	Minimum value of a vector
aw_round	Round to nearest integer
aw_mod	Modulus division
aw_rem	Remainder after division
aw_convergent	Round to nearest integer (even integer for ±0.5 case)
aw_fix	Round towards zero
aw_ceil	Round towards +infinity
aw_floor	Round towards -infinity
aw_dcoffset_correct	Removes DC bias from the input sequence
aw_polyval	Returns the value of a polynomial of degree n evaluated at a point
aw_sqrt	Square root

Filters - Complex Pulse Shaping

Filters - FIR - Adaptive

name	description
aw_lmsfir	Real valued adaptive FIR filter.

Filters - FIR - General Purpose

name	description
aw_filter	Fixed coefficient FIR filter
aw_fir_cmplx	Complex, programmable coefficient FIR filter.
aw_fir_fx	Fixed coefficient FIR filter.
aw_fir_cmplx_fx	Complex, fixed coefficient FIR filter.

Filters - FIR - Linear Phase

name	description
aw_lpfir	Programmable coefficient linear phase FIR filter.
aw_lpfir_cmplx	Complex, programmable coefficient linear phase FIR filter.
aw_lpfir_fx	Fixed coefficient linear phase FIR filter.
aw_lpfir_cmplx_fx	Complex, fixed coefficient linear phase FIR filter.

Filters - FIR - Polyphase

name	description
aw_fir2x	Programmable coefficient 2-phase (even/odd) FIR filter.
aw_fir2x_fx	Fixed coefficient 2-phase (even/odd) FIR filter.
aw_polyfir	Programmable coefficient polyphase FIR filter.
aw_polyfir_fx	Fixed coefficient polyphase FIR filter.

Filters - Fractional Sample Delay

name	description
aw_fsd	Fractional sample delay filter.

Filters - IIR

name	description
aw_iir_biquad	Programmable coefficient IIR 2nd order section.
aw_iir_biquad_fx	Fixed coefficient IIR 2nd order section.
aw_iir_lpf	Multiplierless 1st order IIR low pass filter section.

Filters - Multi-Rate

name	description
aw_interp2x	Fixed 2x interpolation filter with even/odd output.
aw_nonint_interp	Programmable, non-integer interpolation filter.
aw_dec2x	Fixed 2x decimation filter with even/odd output.
aw_nonint_dec	Programmable, non-integer decimation filter.
aw_rrsdec	Programmable accumulate and dump (sinc) decimation filter.
aw_rrsdec_fx	Fixed accumulate and dump (sinc) decimation filter.

Filters - Other

name	description
aw_cicinterpolate	Cascaded Integrator-Comb (CIC) interpolation filter
aw_cicdecimate	Cascaded Integrator Comb (CIC) decimation filter
aw_firhalfband	Half-band FIR filter
aw_rcosfir	Root-Raised Cosine (RRC) filter

Statistical Signal Processing

name	description
aw_corrcoef	Cross-correlation coefficients.
aw_cov	Covariance function.
aw_xcorr	Cross-correlation function.

Symbolic Math

name	description
aw_angle	Phase angle for complex number
aw_conj	Complex conjugate
aw_eig	Eigenvalue
aw_svd	Singular value decomposition
aw_dot	Scalar product of two vectors

Transforms

name	description
aw_fft	Fixed length fast Fourier transform.
aw_fft_prog	Programmable length fast Fourier transform.
aw_ifft	Fixed length inverse fast Fourier transform.
aw_ifft_prog	Programmable length inverse fast Fourier transform.
aw_fft_rad4	Programmable length radix-4 fast Fourier transform.
aw_ifft_rad4	Programmable length radix-4 inverse fast Fourier transform.
aw_fft2	2D fixed length fast Fourier transform.
aw_fft2_prog	2D programmable length fast Fourier transform.
aw_ifft2	2D fixed length inverse fast Fourier transform.
aw_ifft2_prog	2D programmable length inverse fast Fourier transform.
aw_conv	Convolution and polynomial multiplication.
aw_fastconv	Fast convolution (frequency domain filter).
aw_hilbert	Hilbert transform.
aw_dct8x8	Fixed 8x8 discrete cosine transform.
aw_idct8x8	Fixed 8x8 inverse discrete cosine transform.
aw_dct	Programmable discrete cosine transform.
aw_idct	Programmable inverse discrete cosine transform.

Communications Library

Adaptive Equalizers

name	description
aw_fse	Fractionally spaced, complex adaptive equalizer.

Encoders/Decoders

name	description
aw_rsenc	Reed Solomon/BCH encoder [datasheet]
aw_rsenc_prog	Programmable code parameter {N,K,t} Reed-Solomon/BCH encoder.
aw_convenc	Convolutional encoder [datasheet]
aw_rsdec	Reed-Solomon/BCH decoder [datasheet]
aw_rsdec_prog	Programmable code parameter {N,K,t} Reed-Solomon/BCH decoder.
aw_vitdec	Viterbi decoder [datasheet]

Interleavers/Deinterleavers

name	description
aw_convintlv	Convolutional interleaver
aw_convintlv_prog	Programmable depth convolutional interleaver
aw_convdeintlv	Convolutional deinterleaver
aw_convdeintlv_prog	Programmable depth convolutional deinterleaver

Numerically Controlled Oscillators

name	description
aw_nco	Numerically controlled oscillator
aw_nco2x	Numerically controlled oscillator outputting 2 samples per clock.

Predistortion

name	description
aw_polyeval	Programmable order complex polynomial evaluator.
aw_curvefit	Programmable order complex polynomial curve fit.
aw_linearity_error	Compute complex linearity error metric.
aw_cmplx_mag	Compute magnitude of complex number.

Quadrature Modulation

name	description
aw_quadmod2x	Programmable IF passband quadrature modulator.
aw_phase_splitter2x	Real to I-Q complex quadrature demodulator and fixed 2x decimation.
aw_ phase_splitter	Real to I-Q complex quadrature demodulator with no decimation.

Scramblers/Descramblers

name	description
aw_iess310	IESS-310 compliant bit serial scrambler/de-scrambler.
aw_iess310_byte	Enhanced IESS-310 compliant byte-wide scrambler/de-scrambler.
aw_scram16	Custom 16-bit wide scrambler/de-scrambler.
aw_mcns_byte	MCNS/J.83 compliant byte-wide scrambler/de-scrambler.

Symbol Decision

name	description
aw_slicer	QPSK-256QAM slicer

Synchronization

name	description
aw_clk_recovery	Spectral line algorithm for digital clock recovery
aw_clk_lockdetect	Clock lock detector
aw_carr_recovery	Digital phase detector and complex phase rotator
aw_carr_lockdetect	Carrier lock detector
aw_carr_false_lockdet	Carrier false lock detector
aw_cma_lockdetect	Constant Modulus Algorithm (CMA) lock detector

Trellis Coders

name	description
aw_tcm_encode	Programmable rate (k-1)/k or (2k-1)/2k trellis encoder.
aw_tcm_decode	Programmable rate (k-1)/k or (2k-1)/2k trellis decoder.
aw_tcm_decode_j83b	J.83 annex B compliant trellis decoder.