Hierarchical Modulation

Topics: Streaming media, Hindawi Publishing Corporation, Modulation Pages: 1 (304 words) Published: June 11, 2012
Hierarchal Modulation
Wireless transmission of image and video data in hostile mobile environments necessitates for a system which guarantees the quality of the data using effective error protection while at the same time ensures continues video streaming [1]. Unequal Error Protection is a technique which makes use of the fact that not all data in a video stream is equally important [1]. Based on the study first presented in [2], data can be divided into different categories based on its importance and assigned varying levels of error protection. This section focuses on the implementation of unequal error protection in the form of hierarchical modulation.

1. Unequal Error protection of H.264/AVCvideo Using Hierarchical QAM. Woodward, Ahmed B. Abdurrhman and Michael E. Srbija : s.n., 2008. Telekomunikacioni forum. pp. 593-596. 2. Broadcast Channels. Cover, Thomas M. 1972. IEEE TRANSACTIONS ON INFORMATION THEORY. Vol. 18. 3. A Recursive Algorithm for the Exact BER Computation of Generalized Hierarchical QAM Constellations. Pavan K. Vitthaladevuni, Mohamed-Slim Alouini. January 2003. IEEE TRANSACTIONS ON INFORMATION THEORY,. Vol. 49, pp. 297-307. 4. UEP Concepts in Modulation and Coding. Werner Henkel, Khaled Hassan, Neele von Deetzen, Sara Sandberg, Lucile Sassatelli, and David Declercq. [ed.] C. Kuo. s.l. : Hindawi Publishing Corporation, June 27, 2010, Advances in Multimedia, Vol. Volume 2010, p. 14. 10.1155/2010/416797. 5. On Enhancing Hierarchical Modulation. Shu Wang, Soonyil Kwon and Byung K. Yi. San Diego : s.n., LG Electronics Mobile Research. 6. On the General BER Expression of One- and Two-Dimensional Amplitude Modulations. Yoon, Kyongkuk Cho and Dongweon. 7, July 2002, IEEE TRANSACTIONS ON COMMUNICATIONS,, Vol. 50, pp. 1074-1080. 0090-6778/02. 7. A New Look at the Exact BER Evaluation of PAM, QAM and PSK Constellations. Alouini, Pavan K. Vitthaladevuni and Mohamed-Slim. Minneapolis : Telektronikk, 2002.
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