HEVC: The New Gold Standard for Video Compression: How Does HEVC Compare with H.264/AVC?

Large-scale MIMO is capable of eliminating power-thirsty channel coding for wireless transmission of HEVC/H.265 video

“…2. At the transmit side, a standard video encoder, such as H.264 [5,6] or H.265 [2][3][4], may first be invoked at each user for video compression. Then the output video streams of the video encoders are segmented into packets of different size for transport over IP networks.…”

“…We note that in video communications, typically CRC codes are used for detecting whether a bitstream is error-free or not at the output of the channel decoder. This feature is supported by most video compression standards, such as H.264/advanced video coding (AVC) [5,6] and H.265/HEVC [2][3][4]15]. At the receiver, each channel-decoded/ MIMO-detected NALU failing to pass the CRC process is removed during the packet combining process (i.e., prior to the video decoding).…”

“…In the first direction, it has been shown [2,3] that the emerging high efficiency video coding (HEVC/H.265) standard [4] is capable of significantly improving the video compression efficiency at a given reconstructed video quality compared to the existing H.264 standard [5,6], albeit at the cost of increased computational complexity [2,3]. However, increased compression efficiency usually makes the coded video stream more vulnerable to packet losses [3,7].…”

“…However, increased compression efficiency usually makes the coded video stream more vulnerable to packet losses [3,7]. The traditional approach of compensating this side effect is to employ sufficiently powerful error correction codes (ECCs), such as recursive systematic convolutional (RSC) codes, turbo codes, or low-density parity check (LDPC) codes for improving the bit/packet error rate (BER/ PER) [7,8].…”

A full-pipelined 2-D IDCT/IDST VLSI architecture with adaptive block-size for HEVC standard

“…Unlike its predecessors, the DCT/IDCT tool of HEVC supports several block sizes: 4×4, 8×8, 16×16 and 32×32 pixels. Moreover, HEVC also supports the use of the Discrete Sine Transform (DST) and its inverse transform (IDST) in certain intraprediction modes to obtain higher coding gains on residuals that tend to be larger in value for pixels away from the boundaries [3].…”