Abstract: Errors occur in information during transmission, due to noise on the communication channel. In this paper, we study the unequal error protection capabilities of convolutional codes belonging to the family of rate-compatible punctured convolutional codes. Puncturing is the process of deleting some parity bits from the code-word according to a puncturing matrix. Puncturing increases code rate without increasing complexity. The bandwidth efficiency decreases with increase in redundant bits in coding. By removing these redundant bits through puncturing improves the bandwidth efficiency. Puncturing is the trade-off between rate and performance. In this paper, simulation model of OFDM based WIMAX system has been developed using punctured convolutional codes. The bit error rate performance has been carried out for different code rates like 1/2, 2/3, 3/4, 5/6, 7/8, 11/12 for modulation techniques BPSK and QPSK.
Keywords: BPSK; Convolutional codes; MATLAB; OFDM-WiMAX; QPSK; Puncturing.
Title: Performance Evaluation of Punctured Convolutional Codes for OFDM-WiMAX System
Author: Jasmeen Kaur Bisla, Naveen Dhillon, Kuldeep Sharma
International Journal of Electrical and Electronics Research
ISSN 2348-6988 (online)
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