What is Stbc in WIFI?
Space-time block coding (STBC) is an optional feature in 802.11ac. It allows a transmitter to transfer multiple copies of data streams using a number of antennas. It also allows a receiver to select the best copy of data among those multiple copies to improve reliability.
What is Alamouti scheme?
The MIMO Alamouti scheme is an ingenious transmit diversity scheme for two transmit antennas that does not require transmit channel knowledge. The MIMO Alamouti code is a simple space time block code that he developed in 1998.
What is STBC stand for?
Space-Time Block Coding (STBC) for Wireless Networks.
How is Alamouti code Special?
Alamouti’s code copies received. This is a very special STBC. It is the only orthogonal STBC that achieves rate-1. That is to say that it is the only STBC that can achieve its full diversity gain without needing to sacrifice its data rate.
What is enable short GI?
When intending to improve the throughput, enable short GI can improve the throughput about 10%. If the multipath effect is not too serious (not too many metals or other reflecting materials), you can enable short GI. If you are using 802.11n or 802.11ac only, you can enable short GI.
What is cyclic delay diversity in LTE?
Cyclic Delay Diversity (CDD) is a diversity scheme used in OFDM-based telecommunication systems, transforming spatial diversity into frequency diversity and thus avoiding intersymbol interference.
What is space-time block codes?
Space-time block codes are designed to achieve the maximum diversity order for a given number of transmit and receive antennas subject to the constraint of having a simple decoding algorithm. The classical mathematical framework of orthogonal designs is applied to construct space-time block codes.
What is space time block codes?
What is Space Time Trellis encoder?
Space–time trellis codes (STTCs) are a type of space–time code used in multiple-antenna wireless communications. This scheme transmits multiple, redundant copies of a generalised TCM signal distributed over time and a number of antennas (‘space’).