Sentence examples for optical access system from inspiring English sources

Fig. 2 8QAM-OFDM opticaccessesystemtem.

Hence, 128 is often selected as a tradeoff number of the used subcarriers in optical access system [11].

Hence, the modified SLM technique is a better solution scheme for reducing PAPR influence and enhance the reception performance in the 8QAM-OFDM optical access system.

For reducing PAPR influence and enhance signal reception performance in the 8QAM-OFDM optical access system, the modified SLM technique is introduced and compared with the traditional SLM method.

Because 4QAM-OFDM, 16QAM-OFDM, 32QAM-OFDM, 64QAM-OFDM and 128QAM-OFDM signals are adopted in the optical access system, the results show that the BER performance is almost the same when using SLM and modified SLM techniques.

When the transmission distance is 20 km, the BER values of 8QAM-OFDM optical access system using conventional and modified SLM methods are 10−3 and 10 3.5 respectively.

The chapter also illustrates the physical layer issues of optical access systems and components.

Orthogonal frequency division multiplexing has been regarded as one of the promising technologies for the optical access systems application.

In this paper, a modified SLM technique is introduced for reducing the PAPR and enhancing reception performance of the downstream 8QAM-OFDM signals in optical access systems.

In this paper, a modified selected mapping technique is introduced for reducing the peak-to-average power ratio and enhancing reception performance of the downstream 8QAM-OFDM signals in optical access systems.

Recently, SLM method is introduced into generation of (16 quadrature amplitude modulation orthogonal frequency division multiplexing) 16QAM-OFDM signals in millimeter wave optical access systems for solving high PAPR problem [11, 12].