Title :
Blockage mitigation techniques in satellite communications
Abstract :
This article proposes systematic approaches to minimize severe channel degradation. Detection of channel condition is performed by means of two continuous ARQ NAK counting schemes. Stop-and-wait ARQ non-NAK counting is used for timed complete blockage. A single (31,21,5) code is designed for all the ARQ systems proposed. After the blockage state of a transmission channel is determined, satellite link parameter trade-offs and other specific remedy alternatives are recommended to enhance channel performance. System performance criteria are derived with different Earth station capabilities.
Keywords :
automatic repeat request; satellite links; telecommunication channels; Earth station; channel degradation; negative acknowledgment; satellite communications; satellite link parameter trade-offs; stop-and-wait ARQ nonNAK counting; transmission channel; Automatic repeat request; Bandwidth; Degradation; Error correction codes; Feedback; Forward error correction; Radio frequency; Satellite communication; Space vehicles; Transponders;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2005.1522098
