What is LDPC cap?
LDPC is Low-Density Parity Check. It’s a standard part of 802.11n and 802.11ac. It allows your 802.11 transmissions to be more efficient. You want it on for both VHT and HT. STBC is Space-Time Block Coding.
What is LDPC in WiFi?
The Low-Density Parity-Check (LDPC) is a code that enables or disables erroneous correction to reduce the probability of data loss in noisy channels. The Rate Adaptation algorithm automatically disables LDPC coding when working at physical (PHY) rates higher than 162.
How does LDPC work?
An LDPC is constructed using a sparse Tanner graph (subclass of the bipartite graph). LDPC codes are capacity-approaching codes, which means that practical constructions exist that allow the noise threshold to be set very close to the theoretical maximum (the Shannon limit) for a symmetric memoryless channel.
What is EnableAdaptivity?
EnableAdaptivity. Will try to change frequency if it detects WiFi noise. Disable it, if you are relatively closer to the router OR if there are not many WiFi networks around. HLDiffForAdaptibity. Probably relates to adaptivity behavior.
What is Ldpc in SSD?
With the technology scaling of solid state drives (SSDs), data reliability has to be ensured by advanced Low-Density Parity-Check (LDPC) codes. As LDPC reads often take high latency, read performance involved in traditional garbage collection, called external GC, is largely decreased, which affects system performance.
What does Ldpc mean?
Low-density parity-check codes (LDPC codes) are efficient channel coding codes that allow transmission errors to be corrected. They were first described in 1960 by Gallager in his dissertation [Gal63].
What does LDPC mean?
What does fat channel intolerant do?
Fat channel intolerant: When enabled, the client informs access points that it doesn’t support 40 MHz channel-widths in the 2.4 GHz band. 20/40 Coexistence: Enables coexistence techniques, which prevents the access point from using 40 MHz wide channels if it will interfere with any other detected networks.
What is base graph in LDPC?
LDCP Base Graph Base Graph is a Matrix where each of the entries can be further expanded based on the expansion factor Zc. Base Graph 1 (BG1) : With Matrix size 46X68 entries –> For Large Transport Block. Base Graph 2(BG2): With matrix size 42X52 entries–> For Smaller Transport Block.
Should you turn on Fat Channel Intolerant?
HT=High=802.11n. VHT=Very High=802.11ac. Disabled=802.11a/g rates….Default/recommended settings.
| Property | Value |
|---|---|
| Channel Width for 2.4GHz | Auto (AP determines width) |
| Channel Width for 5GHz | Auto (AP determines width) |
| 802.11n Mode (for legacy adapters only) | Enabled |
| Fat Channel Intolerant | Disabled |
Should I disable Fat Channel Intolerant?
At Transmit Power select highest value. If there is Fat Channel Intolerant, disable it. if there is any throughput booster, disable it.
What is an LDPC code for Ethernet?
LDPC codes are also used for 10GBASE-T Ethernet, which sends data at 10 gigabits per second over twisted-pair cables. As of 2009, LDPC codes are also part of the Wi-Fi 802.11 standard as an optional part of 802.11n and 802.11ac, in the High Throughput (HT) PHY specification.
What is an LDPC tone mapper?
Also an LDPC Tone Mapper is applied after the Constellation Mapper for WLAN 802.11ac but not for WLAN 802.11n. When the encoder is disabled, the type of encoder still needs to be known since it determines which processing procedure to follow.
What is LDPC?
In information theory, a low-density parity-check ( LDPC) code is a linear error correcting code, a method of transmitting a message over a noisy transmission channel. An LDPC is constructed using a sparse Tanner graph (subclass of the bipartite graph ). LDPC codes are capacity-approaching codes, which means that practical constructions exist
What is LDPC beamforming and how does it work?
Fig. 1: With 802.11ac (and 802.11n) beamforming, the hub or AP focuses wireless directly at the device that needs it, regardless of how many devices are involved. LDPC is a forward-error-correction coding scheme used to ensure high coding reliability and increase coding gain.