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Download Information Size Date Added Availability BSPK Receiver Tracking Example Pseudo-random binary data is generated, BPSK modulated, corrupted with noise, and then demodulated using a Phase Locked Loop 3.98K 22-06-2005 »Info on download »Download now Reed-Solomon Coding A Red-Solomon RS(204,188) code can correct up to 8 errors 4.47K 22-06-2005 »Info on download »Download now DSSS BER curve DSSS BER example 5.8K 22-06-2005 »Info on download »Download now Reed-Solomon Coding Reed-Solomon Coding 4.47K 22-06-2005 »Info on download »Download now Pi/4-DQPSK Modulation Pi/4-DQPSK Modulation 1.96K 22-06-2005 »Info on download »Download now V.32 Trellis Coding This example illustrates an implementation o fthe V.32 Trellis Coding scheme. The information bit stream is encoded, distorted and then recovered. 3.19K 22-06-2005 »Info on download »Download now 8-PAM Equalizer 8-PAM Equalizer 2.98K 22-06-2005 »Info on download »Download now Pulse Position Modulation (PPM) Pulse Position Modulation (PPM) 2.73K 22-06-2005 »Info on download »Download now File Data Example The File Data block allows the input of file based data into the simulation. The data can be clocked internally or externally, and multiple outputs are support. The data can be made to repeat once the EOF is reached. 1.25K 22-06-2005 »Info on download »Download now Rectangular Pulses Example The Rectungular Pulses block generates a periodic pulse train, and allows the specification of Pulse Rate, Duty Cycle, High Level, Low Level and Start Time 1.58K 22-06-2005 »Info on download »Download now Symbol to Bits Converts a SYMBOL value into a group of individual BITS 1.78K 22-06-2005 »Info on download »Download now PSK Modulator The PSK Modulator accepts a binary input stream and outputs a complex modulated signal 3.1K 22-06-2005 »Info on download »Download now FSK Modulator FSK Modulator 5.97K 22-06-2005 »Info on download »Download now Charge Pump This example compares a Charge Pump circuit to an analog 2nd order PLL. The Real response includes ripple caused by the presence of a double frequency term (a LPF can be used to remove this) 9.03K 22-06-2005 »Info on download »Download now Loop Filter (2nd Order PLL) A 2nd order Phase Locked Loop (PLL) is used t o track the carrier of a BPSK signal. The PLL acquisition performance is shown in a Phase Error plot 2.54K 22-06-2005 »Info on download »Download now Type 3 Phase Detector PLL This example comparies a Type 3 Phase Detector + Charge Pump realisation to an analog 2nd order PLL 5.2K 22-06-2005 »Info on download »Download now MFSK Detector MFSK Detector 5.78K 22-06-2005 »Info on download »Download now Binary Symmetric Channel This example illustrates how coding can be used to correct for channel errors 3.96K 22-06-2005 »Info on download »Download now MSK Modulation MSK Modulation 2.72K 22-06-2005 »Info on download »Download now Compander A Compander allows the applicatino of unequal quantisation. This example shows the non-linear quantisation which can be achieved by using a Compander. 1.94K 22-06-2005 »Info on download »Download now Compander The non-linear quantisation which can be achieved by using a compander 1.94K 22-06-2005 »Info on download »Download now Rayleigh (non mobile) fading Illustrates the effect of Rayleigh fading on a CW signal 2.94K 22-06-2005 »Info on download »Download now Convolution Coding This example illustrates how coding can be used to correct for channel errors. 3.7K 22-06-2005 »Info on download »Download now GMSK Modulation GMSK Modulation - GSM Case 2.51K 22-06-2005 »Info on download »Download now Vector FFT/IFFT An example of a vector FFT/IFFT 3.01K 22-06-2005 »Info on download »Download now IIR Filter Example A 10Hz sine wave is attentuated much more than a 6 Hz sine wave going through the same filter (which has a 8 Hz cutoff) 2.37K 22-06-2005 »Info on download »Download now Response of FIR Filter This simulation illustrates the use of the FFT block to obtain the frequency response of an FIR filter from its impulse response. Supported filter types include Lowpass, Bandpass, Bandstop, Highpass, Raised Cosine, Root Raised Cosine, Gaussian and Hilbert 3.07K 22-06-2005 »Info on download »Download now Fast Fourier Transforms The FFT block performs a one-time FFT or IFFT and is controlled by an external trigger. The output of the FFT block can be treated as a time domain signal within the simulation and manipulated as such 3K 22-06-2005 »Info on download »Download now Autocorrelation Example of Autocorrelation 2.29K 22-06-2005 »Info on download »Download now IQ Modulator The IQ Map block and IQ Detector block can be used to respectively generate and detect arbitrary constellations in the IQ phas plane. This this example, a QPSK constellation with user defined imbalance is shown. 1.37K 22-06-2005 »Info on download »Download now Pulse Position Demodulation Pulse Position Demodulation 2.8K 22-06-2005 »Info on download »Download now PSK Detector PSK Detector 3.07K 22-06-2005 »Info on download »Download now GMSK Modulation This diagram compares GMSK and MSK modulations by comparing the baseband waveforms for the same data sequence 3.47K 22-06-2005 »Info on download »Download now Bit Error Rate An example of the bit error rate block. In this simulation, most symbol errors are single bit errors. Occasionally, a "two bit" symbol error will occur, as illustrated by any difference btween the "symbol" and "bit" error counts 2.05K 22-06-2005 »Info on download »Download now BER Curve Example of BER Curve Generation 3.19K 22-06-2005 »Info on download »Download now Average Power Block Example Average Power Block Example 2.13K 22-06-2005 »Info on download »Download now AM Modulation The example illustrates an Amplitude Modulated signal and two approaches for demodulating the signal 5.7K 22-06-2005 »Info on download »Download now Analog PLL Response This example compares the PLL response to a phase offset vs that from a frequency offset 5.29K 22-06-2005 »Info on download »Download now 16 QAM Modulation 16 QAM Modulation 3.03K 22-06-2005 »Info on download »Download now AM Modulation This example illustrates an Amplitude Modulated (AM) signal and two approaches for demodulating the signal 5.54K 22-06-2005 »Info on download »Download now Phase Rotation The Phase Rotation block can be used to rotate any complex signal, in this case a QPSK constellation. The phase value can be either a constant (as in this example) or a varying phase term. 1.33K 22-06-2005 »Info on download »Download now DQPSK Modulation DQPSK Modulation. For simplicity, carrier and symbol tracking functions have not been invluded (i.e. perfect timing assumed) 1.96K 22-06-2005 »Info on download »Download now Rayleigh (non mobile) fading example Illustrates the effect of Rayleigh fading on a CW signal 2.94K 22-06-2005 »Info on download »Download now Mux/Demux Example The Mux/Demux block can be configured as either a multiplexer of demultiplexer. In Mux mode, the vlock rotates through all inputs, passing one signal at a time. The switch rate can be controlled eithe rinternally or externally. In Demux mode, the block routes the recieved signal in a rotating fashion to each of its outputs. 2.65K 22-06-2005 »Info on download »Download now Convolutional Interleaver Convolutional Interleaver 1.26K 22-06-2005 »Info on download »Download now Nonlinear Amplifier This example illustrates the various intermodulation products formed when two tones are passed through an amplifier close to its compression point 2.5K 22-06-2005 »Info on download »Download now Integrate & Dump The Integrate and Dump block is used to integrate a demodulated signal at a specified sybol rate, thus producing "Dumped" values suitable for Bit/Symbol detection 3.22K 22-06-2005 »Info on download »Download now Walsh Generator Example The Walsh Generator block produces sequences according to the Matrix size, Output Row, Bit rate, and offset into the row. Walsh Sequences are orthogonal to each other and are used in numerous application s(e.g. IS-95) for the desirable properties 2.54K 22-06-2005 »Info on download »Download now MFSK/BER blocks An example of MFSK and BER blocks 5.71K 22-06-2005 »Info on download »Download now Soft Viterbi Decoding Soft Viterbi Decoding 3.78K 22-06-2005 »Info on download »Download now Fading Spectrum In this simulation, the presence of lines in the fading spectrum is due to the constructino of the Jakes mode, which uses a sum of the sinusoids to approximate the overall fading spectrum 2.25K 22-06-2005 »Info on download »Download now Spectrum Analyzer Spectrum Analyzer 1.95K 22-06-2005 »Info on download »Download now Echo Cancellation Equaliser-based Echo Cancellisation 5.98K 22-06-2005 »Info on download »Download now Propagation Loss Propagation Loss 1.43K 22-06-2005 »Info on download »Download now Binary Counter An example of a Binary Counter 1.88K 22-06-2005 »Info on download »Download now A/D Converter A/D Converter 2.44K 22-06-2005 »Info on download »Download now Equalizer Block Example Equalizer Block Example 4.42K 22-06-2005 »Info on download »Download now Parallel to Serial Example The Parallel to Serial block generates the output clock internally at the user specified rate. The first output bit in each group of serial buts is made to coincide with the incoming symbol clock. Subsequent bits are clocked out at the specified rate. If the output rate is too fast, then gaps will result sin the output 4.17K 22-06-2005 »Info on download »Download now D Flip Flop Example D (Delay) Flip Flop is edge triggered, i.e. output will only change during a rising or falling clock edge. Basically the Flip Flop output follows the D input at a one clock delay 2.05K 22-06-2005 »Info on download »Download now Eye Plot Eye plot generation. The cutoff frequency can be changed to see the effect on eye pattern 1.64K 22-06-2005 »Info on download »Download now Filter Viewer Example Filter Viewer choices include the Impulse Response, Gain Response, Phase Response or Group Delay Response 1.77K 22-06-2005 »Info on download »Download now Convolutional Encoding Convolutional Encoding 3.59K 22-06-2005 »Info on download »Download now Hard Viterbi Decoding Hard Viterbi Decoding Example 3.78K 22-06-2005 »Info on download »Download now FM Modulation FM Modulation 4.86K 22-06-2005 »Info on download »Download now FM Demodulator FM Demodulator 4.87K 22-06-2005 »Info on download »Download now Attenuator Example This example illustrates the use of the the Attenuator and Variable Attenuator vlocks. These blocks can also model thermal noice based on the physical temperature of the device. 2.29K 22-06-2005 »Info on download »Download now Complex Math Complex Math Operations 4.86K 22-06-2005 »Info on download »Download now IQ Modulator The IQ Map block and IQ Detector block can be used to respectively generate and detect arbitrary constellations in the IQ phase plane. In this example, a QPSK constellatino with user defined imbalance is shown 1.29K 22-06-2005 »Info on download »Download now Dynamic Equalizer (16 QAM Modulation) This diagram illustrates the use of baseband equalization to compensate for channel distortions on a 16 QAM link. A modulated signal is distorted via the use of a bandlimiting Chebyshev filter with about 3 dB of ripple across the band. The effects of the filter on the modulated signal are evident by looking at the Eye Plot and Phase Scatter Plot. 4.28K 22-06-2005 »Info on download »Download now Pulse Shape Example. The Filter has a span of 4 T. At 20 samples per second, the filter length is 80 taps 1.73K 22-06-2005 »Info on download »Download now An Oscilloscope This model contains an oscilloscope which can be triggered using either an Input Channel or via an External Trigger 2.61K 22-06-2005 »Info on download »Download now Mixer Example This example illustrates the various IF products formed when an RF and LO signals are applied to a mixer. Mixer LO settings can be altered to view the impact on the various output terms. 3.96K 22-06-2005 »Info on download »Download now JK Flip Flop JK Flip Flop is edge triggered, i.e. output will only change during a rising or falling clock edge 4.22K 22-06-2005 »Info on download »Download now Buffer Example Buffer Example 2.37K 22-06-2005 »Info on download »Download now IQ Mapper Example The IQ Mapper block and IQ Detector block can be used to resepectively generate and detect arbitrary constellations in the IQ phase plane. 1.31K 22-06-2005 »Info on download »Download now Autocorrelation Autocorrelation Example 2.44K 22-06-2005 »Info on download »Download now Decimation block The Decimation block samples the input at the specified decimation rate, and can output either a Held or Zero Padded output 2.4K 22-06-2005 »Info on download »Download now Queue Example Queue Example 2.71K 22-06-2005 »Info on download »Download now Fequency Sweep An example of a Frequency Sweep. Once the sweep intervel is completed, the sweep resumse at the start frequency and specified start phase. A phase discontinuity will usually take place at this point. 1.2K 22-06-2005 »Info on download »Download now MagPhase Filter Example The MagPhase block allows the specification of a filter using tabulated gain and phase response data 10.11K 22-06-2005 »Info on download »Download now Random Symbols Example The Random symbol block genreates random symbol sequences of varying "constellation" sizes. The block uses a uniform probability distribution to generate the output values. 1.77K 22-06-2005 »Info on download »Download now PN Sequence Example The PN Sequence block generates Pseudo Noise (PN) binary sequences of varying lengths, and includes support for augmented sequences. The generator polynomial cab be user specified. 2.25K 22-06-2005 »Info on download »Download now Complex FFT The Complex FFT block outputs its result one sample at a time (this can be used to operate on the frequency domain signal just as any other signal (e.g. apply filtering etc) 1.73K 22-06-2005 »Info on download »Download now Block Interleaver an example of Block Interleaving 1.33K 22-06-2005 »Info on download »Download now Modulo Block Example The Modulo block can operate in either integer mode or real mode 2.1K 22-06-2005 »Info on download »Download now Amplifier Example This model illustrates the various intermodulation products formed when two tones are passed through an amplifier operating close to its compression point. The amplifier settings can be changed to oberve the impact on the IM products. 3.71K 22-06-2005 »Info on download »Download now Lookup table TWTA example Lookup table TWTA example 2.84K 22-06-2005 »Info on download »Download now Vector AWGN Example Vector AWGN Example 5.05K 22-06-2005 »Info on download »Download now Gray Mapping Example An example of a Gray Map and Reverse Gray Map. By using Gray encoding, neighbouring niput SYMBOL values are mapped to new values which differ by only one binary digit 1.68K 22-06-2005 »Info on download »Download now Rummler block The Rummler block is equivalent to the sum of a direct ray and a single phase rotated reflected path 2.9K 22-06-2005 »Info on download »Download now Analytical TWTA Analytical TWTA 1.95K 22-06-2005 »Info on download »Download now Tone Rejection An input sound file is corrupted by addition of a to