Performance of zero cross correlation resultant weight spectral amplitude codes in lower Earth orbit‐based optical wireless channel system

• Published in: International journal of communication systems Vol. 33; no. 12
• Main Authors: Kaur, Rupinder, Kaler, Rajinder Singh
• Format: Journal Article
• Language: English
• Published: Chichester Wiley Subscription Services, Inc 01-08-2020
• Subjects: Algorithms; Amplitudes; BER; Bit error rate; chip size; Code Division Multiple Access; Cross correlation; Error correction; IsOWC; jitter; LEO; Low earth orbits; MAI; Mapping; Optical wireless; Q factors; SAC; Vibration; Weight; ZCCRW
• ISSN: 1074-5351; 1099-1131
• DOI: 10.1002/dac.4456

Summary
A consolidated performance investigation and design of newly constructed zero cross correlation resultant weight (ZCCRW) code is presented without mapping over optical wireless channel (OWC) in lower Earth orbit (LEO). Multiple access interference (MAI) is suppressed by incorporating proposed 1‐D code at 10 Gbps with an algorithm. A further state of the art comparison of diverse optical code division multiple access (OCDMA) codes such as multi diagonal codes and diagonal double weight codes is accomplished with proposed code in terms of root mean square (RMS) jitter, extinction ratio, MAI, quality factor (QF), and bit error rate (BER) at different linewidths, chip sizes, link lengths, and active users. It is perceived that for ZCCRW code, QF obtained is 16.5 for chip size (0.1 ns), and at 4000 km, BER 10‐9 is achieved using the forward error correction (FEC) technique. OWC system in LEO with lasers in spectral amplitude code (SAC) OCDMA is proposed for the first time as per the author's best knowledge.
In this research article, a 10‐Gbps laser incorporated zero cross correlation resultant weight (ZCCRW) optical wireless communication is proposed for lower Earth orbit (LEO). An algorithm is presented for ZCCRW code without mapping and can be incorporated for any number of users. It is perceived that for ZCCRW code, QF obtained in 16.5 for chip size (0.1 ns), and at 4000 km, BER 10‐27 is achieved using the forward error correction (FEC) technique.