arriving at the receive end may be erroneous. Channel coding is introduced to restore information to the maximum extent at the receive end, thereby reducing the bit error rate. WLAN uses two channel coding schemes: Binary Convolutional Encoding (BCC) and Low Density Parity Check (LDPC). ...
Since for ML decoding it is very easy to construct codes with good thresholds and low error floors, this gives- - an entirely new way of constructing codes.Urbanke, RuedigerIEEEUrbanke,Ruediger."What is new in coding and how this might impact optical communications,".Optical Communication (ECOC...
Filed undercoding theoryTagged withdigital communication,shannon limit Tutorial—LDPC part I August 8, 2011Leave a comment 我最近的project是关于LDPC的,所以读了一些关于LDPC的资料,只敢说略有了解。想想当初对LDPC的一片茫然,只想通过这几篇blog对一些需要帮助的朋友提供一些帮助。其实网上的LDPC的介绍,tutorial...
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Original 802.11 standards provide MCS coding for each MIMO combination, which is abandoned by 802.11ac. Therefore, there are only 10 MCS coding modes in 802.11ac. A higher MCS value indicates higher maximum throughput. This is because different modulation coding modes use different numbers of bits...
another FEC technique to improve net coding gain performance. Traditional hard decision FEC communication systems compared an incoming bit to a fixed threshold level. Anything that fell above this hard threshold is defined as a “1” bit and anything below the threshold is set to a “0” bit....
it may be faster to ask the sender to retransmit the faulty packet. Also, low-density parity-check (LDPC) codes are more efficient to transmit but require more computation than Hamming code. Since modern computers have more processing power available, LDPC is used forWi-Fi 6and 10GBASE-T ...
UL-SCH stands for uplink shared channel and is a transport channel, which performs CRC addition, code block segmentation, channel coding, and rate-matching on the input transport block. The outcome of the UL-SCH is the coded and rate-matched bits of input t...
Original 802.11 standards provide MCS coding for each MIMO combination, which is abandoned by 802.11ac. Therefore, there are only 10 MCS coding modes in 802.11ac. A higher MCS value indicates higher maximum throughput. This is because different modulation coding modes use different numbers of bits...
It realizes 10 Gbps bit-rate by combining LDPC code with coding rate of 14/15 and 64QAM. In order to achieve excellent performances of the 10 Gbps transmission, (i) 8-bit resolution ADC/DAC, which the conventional 8 Gbps experimental system employed, is upgraded to 12-bit resolution one,...