Mendeley
TY _ JOUR
ID - 139307281515302760
TI - Performance Analysis of SVM-Type Per Tone Equalizer Using Blind and Radius Directed Algorithms for OFDM Systems
JO - Journal of Information Systems and Telecommunication (JIST)
JA - ES
LA - en
SN - 2322-1437
AU - Haji Bagher Naeeni Babak
AD - IRIB
Y1 - 2013
PY - 2013
VL - 2
IS -
SP - 1
EP - 10
KW - Constant Modulus Algorithm (CMA)
KW - Multi-Modulus Algorithm (MMA)
KW - Support Vector Machine (SVM)
KW - Orthogonal Frequency Division Multiplexing (OFDM)
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KW -
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DO -
N2 - In this paper, we present Support Vector Machine (SVM)-based blind per tone equalization for OFDM systems. Blind per tone equalization using Constant Modulus Algorithm (CMA) and Multi-Modulus Algorithm (MMA) are used as the comparison benchmark. The SVM-based cost function utilizes a CMA-like error function and the solution is obtained by means of an Iterative Re-Weighted Least Squares Algorithm (IRWLS). Moreover, like CMA, the error function allows to extend the method to multilevel modulations. In this case, a dual mode algorithm is proposed. Dual mode equalization techniques are commonly used in communication systems working with multilevel signals. Practical blind algorithms for multilevel modulation are able to open the eye of the constellation, but they usually exhibit a high residual error. In a dual mode scheme, once the eye is opened by the blind algorithm, the system switches to another algorithm, which is able to obtain a lower residual error under a suitable initial ISI level. Simulation experiments show that the performance of blind per tone equalization using support vector machine has better than blind per tone equalization using CMA and MMA, from viewpoint of average Bit-Error Rate (BER).
UR - rimag.ir/en/Article/14809
L1 - rimag.ir/en/Article/Download/14809
ER -