The System Studio DSP Base Library includes more than 2000 distinct signal processing models and a large number of combined examples that serve as demo vehicles or starting points for customer specific configurations. All models are provided in source code for maximum flexibility. The Base Library is included with System Studio licenses at no extra charge. Model categories include, among others:

• Sources (Constant, Ramp, Random, Sinus, Saw, Dirac, White Gaussian Noice, OFDM, …)
• Basic Operations (Add/Sub, Mul/Div, Abs, Sin/Cos, Min/Max, Sqr, Log, Exp, Conjugate, Integrate, Table lookup, …)
• Encoder / Decoder (Bit2Symbol, Gray, Fire, Manchester, Convolution, Differential, Trellis, …)
• Modulation / Demodulation (linear, FM, PSK, QAM, CPM, DiffPSK, GMSK, …)
• Filter (FIR, IIR, lowpass, bandpass, Butterworth, RootRaised Cosine, Chebychev, …)
• Channels (AWGN, Rayleigh fading, Rice, …)
• Equalizer (Kalman, LMS, LMS-DF, RLS, MMSE, …)
• Sinks (BER, eye diagram, histograms, SNR, …)
• Logic (And, Equal, Less, Greater, …)
• Flow Control (De/Interleaver, Delay, De/Multiplex, Interpolate, …)
• Conversion (Scalar-to-complex, float-to-fixed, …)

The System Studio Reference Design Kit (RDK) Library consists of a set of models that support the analysis and design of advanced protocols and standards in the wireless and digital signal processing domain. They provide extensive analysis capabilities that help define optimized algorithms to implement these standards.

Key Features

• Easy to modify pre-existing models for the quick creation and analysis of alternative solutions
• Built-in monitors to analyze the behavior of your algorithm
• Reference models for popular standards in wireless and multimedia including transmitter, channel and receiver

Broadband Access

• ADSL
• DOCSIS cable modem

Wireless

• cdma2000 1x EV-DV
• EDGE
• Bluetooth™
• IEEE 802.11
• GSM/GPRS
• IS-136
• cdmaOne
• DECTPDC

Digital Video

• MPEG-4 video
• MPEG-2 video

Broadcast standards

• DVB
• DAB

The System Studio Error Correction Coding (ECC) Library contains models of advanced error correction codecs, both encoder and decoder. All models come with ready-to-run sample configurations.

• Convolutional Encoder
• Viterbi Decoder for (M*N, N*M) Convolutional Codes
• Cyclic: Envoder/Decoder for Systematic (N/K) cyclic coder
• Golay: Encoder/Decoder for (24/12/8) Binary Golay Codes\
• Reed-Muller: Encoder/ Decoder for Firsdt Order Reed-Muller codes
• Reed-Solomon: Encoder/Decoder (incl. Modified Code Generator Polynomial)
• GSM enhanced

The System Studio Speech Library consists of ready-to-run reference configurations for the following standards

• ITU G722 and G726: ADPCM models that can be used to model a speech transmission system according to the ITU G.722 and G.726 recommendations. The coding system uses sub-band adaptive differential pulse code modulation (SB-ADPCM) within an output bit rate of 64 kbit/s.
• GSM Full Rate Speech Coder: works on 13-bit uniformly quantized speech signals sampled at 8kHz, so the input bitrate of the encoder is 104kbit/s. Using the methods of linear predictive coding (LPC), long-term prediction (LTP) and regular pulse Excitation (RPE) the output bitrate is reduced to 13 kbit/s. Optionally, voice activity detection (VAD) can be performed, which can be used for simulating discontinuous transmissions (DTX).
• GSM Half Rate Speech Coder: uses the methods of linear predictive coding (LPC), long-term prediction (LTP) and code-excited linear predication (CELP). Applying the vector-sum-excited linear predication (VSELP) algorithm, the output bitrate is reduced to 5.6 kbit/s.

  GSM Enhanced Full Rate Speech Coder: uses the methods of linear predictive coding (LPC), long-term prediction (LTP) and code-excited linear predication (CELP). Applying algebraic code-excited linear predication (ACELP) reduces the output bitrate to 13 kbit/s. ACELP has an optimized algorithm for a codebook search using a set of basic vectors to construct the excitation.