Academic Journal
Adaptive Rate Allocation In A Joint Source/Channel Coding Framework For Wireless Channels
| العنوان: | Adaptive Rate Allocation In A Joint Source/Channel Coding Framework For Wireless Channels |
|---|---|
| المؤلفون: | Hamid Jafarkhani, Paschalis Ligdas, Nariman Farvardin |
| المساهمون: | The Pennsylvania State University CiteSeerX Archives |
| المصدر: | http://www.isr.umd.edu/~pascal/papers/vtc96.ps. |
| سنة النشر: | 1996 |
| المجموعة: | CiteSeerX |
| الوصف: | We propose an adaptive rate allocation scheme to choose the rates of the source coder and channel coder pair optimally. We express the end-to-end expected distortion in terms of the source coder distortion and the channel distortion. Also, we propose a modified Gilbert noise channel to model the combination of channel encoder, channel, and channel decoder. Based on our new model, we estimate the channel distortion and select the best source coder and channel coder pair to encode and transmit the source. Simulation results show the optimality of the rate allocation scheme and the advantage of the adaptation. I. INTRODUCTION In a joint source/channel coding scheme (Fig. 1), one of the important problems is how to allocate the bit rate (bandwidth) between the source coder and the channel coder. Consider a class of source coders consisting of fixed-length coders operating at different bit rates r s 2 R s and a class of channel coders consisting of coders with rates r c 2 R c . Then, the . |
| نوع الوثيقة: | text |
| وصف الملف: | application/postscript |
| اللغة: | English |
| Relation: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.47.7801; http://www.isr.umd.edu/~pascal/papers/vtc96.ps |
| الاتاحة: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.47.7801 http://www.isr.umd.edu/~pascal/papers/vtc96.ps |
| Rights: | Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| رقم الانضمام: | edsbas.23069ECC |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |