Maximizing Throughput of Free Space Communication Systems Using Puncturing Technique

作者：Khan Muhammad N^*; Jamil Mohsin

来源：Arabian Journal for Science and Engineering, 2014, 39(12): 8925-8933.

DOI：10.1007/s13369-014-1451-6

• Low-density parity-check (LDPC) code
• Channel state information (CSI)
• Free space optical (FSO)
• Extrinsic information transfer (EXIT) chart
• Puncturing optimization algorithm (POA)

Radio frequency spectrum is too crowded and expensive to install new broadband channels. Free space optical (FSO) communication is a viable technology, which offers enormous bandwidth, license-free spectrum and non-interfering nature. But the FSO link deteriorates significantly due to the atmospheric turbulence and sever weather conditions (fog, cloud and snow). Hybrid FSO/RF communication system with independent coding scheme has been suggested in the literature. But such systems are expensive and have synchronization issue. We propose a hybrid FSO/RF communication system with joint coding scheme. A novel puncturing optimization algorithm is developed, which adaptively tackle fading effects of the individual communication link. The proposed puncturing algorithm gives more than 3 dB power gain over the fixed system.

• 出版日期2014-12