Hierarchical modulations for multimedia and multicast transmission over fading channels

TitleHierarchical modulations for multimedia and multicast transmission over fading channels
Publication TypeConference Paper
Year of Publication2003
AuthorsHossain, M. J., P. K. Vitthaladevuni, M. - S. Alouini, and V. K. Bhargava
Conference NameVehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Pagination2633 - 2637 vol.4
Date Publishedapr.
Keywordsadaptive hierarchical M-PSK, adaptive uniform M-PSK, asymmetrical constellation, embedded constellation, energy gain, fading channels, hierarchical modulation scheme, multicast communication, multicast transmission, multimedia communication, multimedia transmission, multiple phase shift keying, multiresolution constellation, phase shift keying, phase-shift-keying constellation, PSK constellation, wireless fading channels

In this paper, a hierarchical modulation scheme (known also as embedded, multi-resolution, or asymmetrical constellation) is studied for transmission of multicast and multimedia services over wireless fading channels. Specifically, we propose general design guidelines for multicast and multimedia transmission over fading channels with an adaptive hierarchical phase-shift-keying (PSK) constellation. Computer simulation results show that the proposed adaptive hierarchical M-PSK is more energy efficient than the traditional adaptive uniform M-PSK for both applications except some special cases. The energy gain of hierarchical PSK over uniform PSK depends only on the required quality parameters of the services in multimedia transmission. For multicasting, the gain depends on both the recipients' link qualities and the required quality parameters of the multicast message.


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