A Novel Unequal Error Protection Scheme Employing Binary BCH Codes and Hierarchical 8PSK Modulation for Wireless Channels

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Provided by: International Association of Scientific Innovation and Research (IASIR)
Topic: Enterprise Software
Format: PDF
In several applications of digital transmission such as video, images, voice and data, the importance of different bits in the input sequence of the channel encoder often varies and certain blocks of this sequence need higher protection level than other blocks, when this sequence is transmitted through a wireless channel. An error-correcting code which provides a selective level of protection to the information bits possesses a property called Unequal Error Protection (UEP). UEP can be obtained either by using separate coding schemes with distinct error-correction capability for each level of protection or by using a hierarchical modulation with UEP capability.
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