Unequal Error Protection: An Information-Theoretic Perspective
IEEE TRANSACTIONS ON INFORMATION THEORY, cilt.55, sa.12, ss.5511-5539, 2009 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 55 Sayı: 12
- Basım Tarihi: 2009
- Doi Numarası: 10.1109/tit.2009.2032819
- Dergi Adı: IEEE TRANSACTIONS ON INFORMATION THEORY
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.5511-5539
- Anahtar Kelimeler: Block codes, blowing-up lemma, error exponents, false alarm, feedback, missed detection, unequal error protection (UEP), variable-length block coding, BOUNDS, CODES, CHANNELS
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Hayır
Özet
An information-theoretic framework for unequal error protection is developed in terms of the exponential error bounds. The fundamental difference between the bit-wise and message-wise unequal error protection (UEP) is demonstrated, for fixed-length block codes on discrete memoryless channels (DMCs) without feedback. Effect of feedback is investigated via variable-length block codes. It is shown that, feedback results in a significant improvement in both bit-wise and message-wise UEPs (except the single message case for missed detection). The distinction between false-alarm and missed-detection formalizations for message-wise UEP is also considered. All results presented are at rates close to capacity.