Title	The Block Lossless Data Compression Algorithm
Author	Weiling Chang, Binxing Fang, Xiaochun Yun, Shupeng Wang
Citation	Vol. 9  No. 10  pp. 116-123
Keywords	Block data compression, LZSS, LZW, PPM, BWT

Title	Design Optimization of Optical Communication Systems using Carbon Nanotubes (CNTs) based on Optical Code Division Multiple Access (OCDMA)
Author	Jafaar Fahad A.Rida, A. K. Bhardwaj, A.K.Jaiswal
Citation	Vol. 14  No. 12  pp. 102-112
Keywords	OCDMA system, Carbon nanotubes, OOK formats, PPM formats, BER performance

Title	Enhancing the Power Spectral Density of PPM TH-IR UWB Signals Using Sub-Slots Technique
Author	Nidal Qasem, Bashar Al-haj Moh’d
Citation	Vol. 17  No. 1  pp. 124-129
Keywords	FFT, PPM, PSD, Spectral Estimation, TH-IR, UWB.

Title	Performance of Systematic Distance-4 Codes in Free-Space Optical Communication System
Author	Wamidh Jalil Mazher, Oguz Bayat, and Osman Nuri Ucan
Citation	Vol. 17  No. 12  pp. 5-12
Keywords	LDPC, Hamming distance, systematic coding, FSO, PPM. channel throughput.