Wirelesshd Video Transmission Over Multicarrier Error-Correctionchannels

Abstract

Uncompressed High-Definition video streaming over extremely high frequency using wireless technologies, also known as WirelessHD, is a challenge problem because of the high data rate requirement and channel variations. The advantages in RF technology and the huge bandwidth available in the 57-66 GHZ millimeter wave open new era for High Definition applications and high data rates communication. Retransmission is not favored for HD multimedia transmission as any latency may cause flickering. So, powerful error correction and detection is needed to detect any corrupted pixels and recover it to guarantee the communication. In this study, we proposed a system that uses Low Density Parity Check (LDPC) code for error detection and correction and OFDM technique for protecting video signal from fading. A suggested frame partitioning technique is applied to perform spatial diversity.To judge on the proposed system, peak signal to noise ratio and symbol error rate will be used at the receiver for testing the received frame quality. Simulations using uncompressed videos indicate that the proposed system can give low bit error rate and high peak signal to noise ratio after transmitting the frame over AWGN and Rayleigh channels.

Performance Analysis of Joint Degree Distribution (JDD) in Luby Transform Codes

“…As an alternate to ARQ, Forward Error Correction (FEC) schemes such as Low Density Parity Check (LDPC) codes introduce redundant data for achieving minimum retransmissions (Khedr and Sharkas, 2012). Here, the basic assumption is that the channel state information is known prior to both the transmitter and receiver.…”

Throughput and Bit Error Rate Analysis of Luby Transform Codes With Low and Medium Nodal Degree Distributions

“…Because, ARQ allows the retransmissions of data, introducing more delay, which is not acceptable in broadcasting applications (Eduardo et al, 2010). LowDensity Parity-Check (LDPC) codes are one of the Forward Error Correction (FEC) schemes achieve reliable communication with minimum retransmissions (Khedr and Sharkas, 2012). However, the assumption is that both transmitter and receiver should know the prior knowledge about channel conditions.…”