Analysis of packet header effects in rate allocation for packet video
نویسندگان
چکیده
The packet header is often ignored in bit allocation problem of forward error correction (FEC) based packet video transmission schemes. In this paper, we show that the packet header has significant influence on the system performance. We balance the effect of the packet header and the efficiency of FEC codes via a probabilistic formulation. Optimal bit allocation is achieved in both non-scalable video and scalable video. Experiments show that the reconstructed video quality is improved significantly by our algorithm. Finally, we also study the effect of parameter mismatch on the performance of our algorithm.
منابع مشابه
Cross-layer Packet-dependant OFDM Scheduling Based on Proportional Fairness
This paper assumes each user has more than one queue, derives a new packet-dependant proportional fairness power allocation pattern based on the sum of weight capacity and the packet’s priority in users’ queues, and proposes 4 new cross-layer packet-dependant OFDM scheduling schemes based on proportional fairness for heterogeneous classes of traffic. Scenario 1, scenario 2 and scenario 3 lead r...
متن کاملA Method to Reduce Effects of Packet Loss in Video Streaming Using Multiple Description Coding
Multiple description (MD) coding has evolved as a promising technique for promoting error resiliency of multimedia system in real-time application programs over error-prone communicational channels. Although multiple description lattice vector quantization (MDCLVQ) is an efficient method for transmitting reliable data in the context of potential error channels, this method doesn’t consider disc...
متن کاملHeader Compression Based Error Resilience for Wireless Communications
Transmission errors in wireless communications cause detrimental effects on decoded video quality. For error prone low bit rate video transmission, error resilience and error robustness techniques are used to improve the perceived video quality. In packet based transmission, the video packet headers reduce the effective transmission rate and contribute to increase the packet loss rate due to er...
متن کاملThe Feedback Based Mechanism for Video Streaming Over Multipath Ad Hoc Networks
Ad hoc networks are multi-hop wireless networks without a pre-installed infrastructure. Such networks are widely used in military applications and in emergency situations as they permit the establishment of a communication network at very short notice with a very low cost. Video is very sensitive for packet loss and wireless ad-hoc networks are error prone due to node mobility and weak links. H...
متن کاملارزیابی سیاستهای زمانبندی در نسل چهارم شبکههای سلولی (LTE)
New generation of wireless networks, LTE and WiMAX, supports many services which consume a lot of resources (such as VOIP, Video Conference, Digital Video, Multimedia streams and online Multi-player Games). Supporting multi-media services in wireless communication systems provide new resource allocation challenges. Because of high loads in downlink, efficient resource allocation is vital in dow...
متن کامل