Efficient Error Estimating Coding: Feasibility and Applications

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JAVA 2013 IEEE PAPERS

Efficient Error Estimating Coding:

Feasibility and Applications

Abstract:

Motivated by recent emerging systems that can leverage partially correct packets in wireless networks, this paper proposes the novel concept of error estimating coding (EEC).Without correcting the errors in the packet, EEC enables the receiver of the packet to estimate the packet’s bit error rate, which is perhaps the most important meta-information of a partially correct packet. Our EEC design provides provable estimation

quality with rather low redundancy and computational overhead. To demonstrate the utility of EEC, we exploit and implement EECin two wireless network applications, Wi-Fi rate adaptation and real-time video streaming. Our real-world experiments show that these applications can significantly benefit from EEC.

EXISTING SYSTEM:

The traditional philosophybehind error correction is that the application/network

can or should only use/relay completely correct packets.Previously, the packets containing important information can be lost in the transformation from sender to receiver.

PROPOSED SYSTEM:

In particular,many designs  can now use a packet that ispartially correct (i.e., some bits are correct, but others are corrupted).Such a partial packet can be useful when the followingsituations apply.

1. The destination may be able to obtain incremental redundancy from the source to recover the partial packet .

2. The destination may collect and combine multiple partial packets to obtain a correct copy .

3.The packet has forward error correction and thus can potentially fully recover the errors. For example, forward error correction is often used in real-time video streaming to tolerate errors in wireless networks.

4. The application may be able to directly use partial packets to some extent. For example, for image or video packets, a partially correct packet can still carry some useful information .

This paper takes the first step in answering this question byproposing the novel concept of error estimating coding (EEC).Without actually correcting the errors in the packet, EEC enables the receiver to estimate the fraction of corrupted bits in the

packet, which is perhaps the most important meta-information of a partial packet.We call such a fraction the packet’s bit errorrate, or BER.

Software and Hardware Requirements

Hardware Required:

System                                    :           Pentium IV

Hard Disk                   :           80 GB

RAM                           :           512 MB

Software Required:

Operating System       :           Windows XP

Language                    :           JAVA