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<div class="title">Main features of IT++ </div> </div>
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<div class="textblock"><p>A short list of the main features of IT++ is given below sorted in different categories. Many more features and functions exist and for these we refer to the reference documentation.</p>
<h2><a class="anchor" id="prog_features"></a>
Programming features</h2>
<ul>
<li>templated array and stack container classes</li>
<li>input and file argument parser</li>
<li>timing functions and classes</li>
</ul>
<h2><a class="anchor" id="math_features"></a>
Basic mathematical features</h2>
<ul>
<li>templated vector and matrix classes</li>
<li>sparse vectors and matrix classes</li>
<li>elementary functions on vectors and matrices</li>
<li>statistics classes and functions</li>
<li>matrix decompositions such as eigenvalue, Cholesky, LU, Schur, SVD, and QR</li>
<li>solving linear system of equations (including over and underdetermined)</li>
<li>random number generation (Mersenne Twister generator)</li>
<li>binary and Galois types (both scalar and vector and matrices)</li>
<li>integration of 1-dimensional functions</li>
<li>unconditional nonlinear optimization (Quasi-Newton search)</li>
</ul>
<h2><a class="anchor" id="sigproc_features"></a>
Signal processing</h2>
<ul>
<li>filter functions and classes</li>
<li>frequency domain filtering</li>
<li>FFT, DFT, DCT, and Hadamard transforms</li>
<li>time and frequency domain windows</li>
<li>evaluating and finding roots of polynomials (and inverse operations)</li>
<li>filter design functions</li>
<li>fast independent component analysis (fast ICA)</li>
</ul>
<h2><a class="anchor" id="comm_features"></a>
Communications</h2>
<ul>
<li>modulators (BPSK, PSK, PAM, QAM)</li>
<li>vector modulators (e.g. for OFDM and MIMO)</li>
<li>OFDM and CDMA modulators</li>
<li>pulse shaping filters (including RC and RRC)</li>
<li>binary symmetric (BSC) and additive white Gaussian Noise (AWGN) channels</li>
<li>multipath fading channels (both frequency-flat and frequency-selective)</li>
<li>COST 207, COST 257, and ITU channel models</li>
<li>Hamming, extended Golay, and CRC codes</li>
<li>BCH and Reed-Solomon codes</li>
<li>convolutional and punctured convolutional codes</li>
<li>recursive convolutional codes</li>
<li>turbo codes</li>
<li>interleavers</li>
</ul>
<h2><a class="anchor" id="protocol_features"></a>
Protocol simulation</h2>
<ul>
<li>event-based simulation classes</li>
<li>signal and slots for simplified syntax</li>
<li>TCP clients and servers</li>
<li>selective repeat ARQ</li>
<li>queue classes</li>
<li>packet generators</li>
</ul>
<h2><a class="anchor" id="srccode_features"></a>
Source coding</h2>
<ul>
<li>Scalar Quantizer (SQ) and Vector Quantizer (VQ) classes and functions for training of these</li>
<li>LPC, LSF, and cepstrum parameter calculation for speech processing</li>
<li>Gaussian Mixture Modeling</li>
<li>reading and saving several different audiofile formats</li>
<li>reading and saving images in PNM format</li>
</ul>
<h2><a class="anchor" id="other_features"></a>
Other features</h2>
<ul>
<li>binary file format for most built in and IT++ types</li>
<li>fixed-point scalar, vector and matrix types </li>
</ul>
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