BIT ERROR RATE BER BASICS AND MEASUREMENT TECHNIQUES

How to reduce the bit error rate of OFDM

How to reduce the bit error rate of OFDM

For this, numerous techniques are proposed to beat the PAPR problem like i) Selective mapping (SLM) ii) Partial transmit sequence (PTS), iii) Clipping, iv) Clipping and filtering. Current technological objectives for OFDM focus primarily on optimizing bit error rate (BER) performance, particularly in high-data-rate applications where transmission reliability directly impacts user experience. However, one amongst the foremost drawbacks of the OFDM system is that the high-peak-to-average power ratio (PAPR) that leads the system to provide in-band distortion and out-of-band radiation and reduces its efficiency. OFDM can be implemented easily, it is spectrally efficient and can provide high data rates with sufficient robustness to channel imperfections. Abstract-In this paper we present an analytical approach to evaluate the bit error rate (BER) of OFDM systems subject to carrier frequency offset (CFO) and channel estimation error in Rayleigh flat fading as well as in time and frequency selective fading channels.

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What are the measurement standards for fiber optic cable splicing

What are the measurement standards for fiber optic cable splicing

It describes suitable procedures for splicing that should be carefully followed in order to obtain reliable splices between single optical fibres or ribbons. The Contractor must utilize the correct equipment and testing techniques to gain acceptance, or the work cannot be approved. For every fiber optic cable plant, you need to test for continuity and polarity, end-to-end insertion loss and then troubleshoot any problems. The technical examples and product names included throughout (such as closure types, cable models, and tools) are used solely for educational and reference purposes — to illustrate real-world applications of universal procedures and best practices.

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