![](/images/graphics-bg.png)
On the Efficient Broadcasting of Heterogeneous Services over Band-Limited Channels : Unequal Power Allocation for Wavelet Packet Division Multiplexing
المؤلف
المصدر
International Journal of Digital Multimedia Broadcasting
العدد
المجلد 2008، العدد 2008 (31 ديسمبر/كانون الأول 2008)، ص ص. 1-9، 9ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2008-02-25
دولة النشر
مصر
عدد الصفحات
9
التخصصات الرئيسية
العلوم الهندسية و تكنولوجيا المعلومات
هندسة الاتصالات
هندسة كهربائية
تكنولوجيا المعلومات وعلم الحاسوب
الملخص EN
Multiple transmission of heterogeneous services is a central aspect of broadcasting technology.
Often, in this framework, the design of efficient communication systems is complicated by stringent bandwidth constraint.
In wavelet packet division multiplexing (WPDM), the message signals are waveform coded onto wavelet packet basis functions.
The overlapping nature of such waveforms in both time and frequency allows improving the performance over the commonly used FDM and TDM schemes, while their orthogonality properties permit to extract the message signals by a simple correlator receiver.
Furthermore, the scalable structure of WPDM makes it suitable for broadcasting heterogeneous services.
This work investigates unequal error protection (UEP) of data which exhibit different sensitivities to channel errors to improve the performance of WPDM for transmission over band-limited channels.
To cope with bandwidth constraint, an appropriate distribution of power among waveforms is proposed which is driven by the channel error sensitivities of the carried message signals in case of Gaussian noise.
We address this problem by means of the genetic algorithms (GAs), which allow flexible suboptimal solution with reduced complexity.
The mean square error (MSE) between the original and the decoded message, ψ which has a strong correlation with subjective perception, is used as an optimization criterion.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Murroni, Maurizio. 2008. On the Efficient Broadcasting of Heterogeneous Services over Band-Limited Channels : Unequal Power Allocation for Wavelet Packet Division Multiplexing. International Journal of Digital Multimedia Broadcasting،Vol. 2008, no. 2008, pp.1-9.
https://search.emarefa.net/detail/BIM-478449
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Murroni, Maurizio. On the Efficient Broadcasting of Heterogeneous Services over Band-Limited Channels : Unequal Power Allocation for Wavelet Packet Division Multiplexing. International Journal of Digital Multimedia Broadcasting No. 2008 (2008), pp.1-9.
https://search.emarefa.net/detail/BIM-478449
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Murroni, Maurizio. On the Efficient Broadcasting of Heterogeneous Services over Band-Limited Channels : Unequal Power Allocation for Wavelet Packet Division Multiplexing. International Journal of Digital Multimedia Broadcasting. 2008. Vol. 2008, no. 2008, pp.1-9.
https://search.emarefa.net/detail/BIM-478449
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-478449
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
![](/images/ebook-kashef.png)
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر
![](/images/kashef-image.png)