Name
Title | ||
|---|---|---|
Resource Allocation and Performance Analysis for Multiuser Video Transmission Over Doubly Selective Channels |
Abstract | ||
|---|---|---|
We consider an uplink multicarrier system with multiple video users who want to send compressed video data to the base station. In the time domain, we model the time-varying channel using Jakes' model, and in the frequency domain, each subcarrier is assumed to be independently fading. The video is scalably coded in units of a group of pictures (GOP), and users have different video rate distortion (RD) functions. At the beginning of the GOP, the base station collects both the RD information and the instantaneous channel state information (CSI) for subcarrier allocation purposes. We design a cross-layer resource allocation algorithm to assign subcarriers to users based on both the demand of the video and the quality of the channel. Once the resource allocation decision is made, the users then periodically adapt the modulation format of the subcarriers allocated according to the evolution of the CSI for the duration of the GOP. We show that our cross-layer resource allocation robustly outperforms two baseline algorithms, each of which uses only one layer of information for resource allocation. |
Year | DOI | Venue |
|---|---|---|
2015 | 10.1109/TWC.2014.2377172 | IEEE Transactions on Wireless Communications |
Keywords | Field | DocType |
base station,multiuser channels,subcarrier allocation,channel state information,csi,uplink multicarrier system,jakes model,wireless power allocation,data compression,multiple video users,resource allocation,time-varying channel,multicarrier system,multimedia communication,radio spectrum management,channel allocation,cross-layer resource allocation algorithm,video coding,frequency domain,video on demand,multiuser video transmission,group of pictures,doubly selective channels,compressed video data,performance analysis,video communication,video rate distortion functions,gop,channel quality,fading,wireless communication,modulation,resource management,doppler effect | Subcarrier,Resource management,Group of pictures,Fading,Computer science,Computer network,Communication channel,Real-time computing,Resource allocation,Channel state information,Telecommunications link | Journal |
Volume | Issue | ISSN |
14 | 4 | 1536-1276 |
Citations | PageRank | References |
6 | 0.41 | 28 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Dawei Wang | 1 | 57 | 2.73 |
| Laura Toni | 2 | 32 | 2.03 |
| P. Cosman | 3 | 11 | 2.62 |
| Laurence B. Milstein | 4 | 6 | 0.41 |