Raga Bharani Chenna
ABSTRACT
In a mesh network, there are many paths available between two nodes depending on their location. To explore this property of path diversity, the information can be split into chunks and sent over different paths. An image or video when packetized and sent, there are chances that few packets may be corrupted in transmission. Spatial Correlation property of images and videos can be used to split an image or video frame into different descriptions so that spatial neighbors fall into different descriptions which can be sent independent of each other thus preserving the details better. Also, by inserting a recovery stage in between, we can overcome the existing errors to some extent with the help of their spatial/transformed neighbors. Hence, to achieve error resilience in wireless mesh networks by the virtue of path diversity and spatial correlation, Multiple Description Transform Coding (MDTC) was formulated for images and extended to videos. Multiple paths are selected based on channel state (packet error information). Intermediate recovery is added to increase the robustness of MDTC. The proposed scheme improves the PSNR of the received video and reduces end to end transmission delay in a wireless mesh network.
- P. De, N. Banerjee, and S. De. 2014. Exploiting Multiple Description Coding for Intermediate Recovery in Wireless Mesh Networks. J. Netw. Comput. Appl. 37 (Jan. 2014), 2--11. Google Scholar
Digital Library
- V. K. Goyal and J. Kovacevic. 1998. Optimal multiple description transform coding of Gaussian vectors. In Proc. Data Compression Conf. Snowbird, USA, 388--397. Google ScholarDigital Library
- V. K. Goyal, J. Kovacevic, R. Arean, and M. Vetterli. 1998. Multiple description transform coding of images. In Proc. Inter. Conf. on Image Processing, Vol. 1. Berkeley, CA, USA, 674--678.Google Scholar
- V. K Goyal and J. Kovacevic. 1998. Multiple description source matched channel coding of a Gaussian source. IEEE Trans. Inform. Th. (Jan. 1998).Google Scholar
- M. U. Parthavi and S. De. 2012. Mesh Routing for Error Resilient Delivery of Multiple-Description Coded Image/Video Content. In Proc. Inter. Conf. on Computer Communications and Networks (ICCCN). Munich, Germany, 1--7.Google Scholar
- I. S. Reed and G. Solomon. 1960. The Original View of Reed-Solomon Codes. Journal of SIAM (Jun.. 1960), 3--9.Google Scholar
- A. Sharma, S. De, H. M. Gupta, and R. Gangopadhyay. 2014. Multiple Description Transform Coded Transmission over OFDM Broadcast Channels. Phys. Commun. 12 (Sep. 2014), 79--92. Google ScholarDigital Library
- J. R. Yee and E. J. Weldon. 1995. Evaluation of the performance of error-correcting codes on a Gilbert channel. IEEE Trans. on Commun. 43, 8 (Aug. 1995), 2316--2323.Google ScholarCross Ref
- MDTC Video Transmission using Channel Aware Multipath Routing in Wireless Mesh Networks
Recommendations
Multi-channel Busy-tone Multiple Access for Scalable Wireless Mesh Network
AINAW '07: Proceedings of the 21st International Conference on Advanced Information Networking and Applications Workshops - Volume 02This paper proposes a multi-channel medium access control (MAC) protocol for wireless mesh networks (WMNs) by using busy tones to prevent data packet collisions at data channels. Multi-channel MAC schemes can achieve higher network throughput than ...
Protocols and architectures for channel assignment in wireless mesh networks
The use of multiple channels can substantially improve the performance of wireless mesh networks. Considering that the IEEE PHY specification permits the simultaneous operation of three non-overlapping channels in the 2.4GHz band and 12 non-overlapping ...
On Demand Stable Routing with Channel Allocation and Backoff Countdown Optimization in Wireless Mesh Networks
The multi-channel and multi-interface wireless mesh networks (WMNs) allow multiple orthogonal channels simultaneously to facilitate increased broadband connectivity to the end-users. Many efforts have been devoted to allocate the channels to the ...
Comments