Journal article

Performance Analysis of Repetition-Coding and Space-Time-Block-Coding as Transmitter Diversity Schemes for Indoor Optical Wireless Communications

Tingting Song, Ampalavanapillai Nirmalathas, Christina Lim, Elaine Wong, Ka-Lun Lee, Yang Hong, Kamal Alameh, Ke Wang

Journal of Lightwave Technology | Institute of Electrical and Electronics Engineers (IEEE) | Published : 2019

Abstract

The benefits of 2 × 1 multiple-inputs-single-output scheme for transmitter diversity in the infrared indoor optical wireless communication link are theoretically investigated. The performance of repetition-coding (RC) and Alamouti-type real-valued space-time-block-coding (STBC) as effective transmitter diversity schemes is systematically compared under conditions of channel gain variation caused by the degradation in the received optical power due to the blocking of one optical beam of the optical wireless channel. It is shown that the linear addition of channel gains in the RC scheme outperforms the root-sum-square of channel gains in the STBC scheme with regards to the bit-error-rate (BER)..

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