What is space time encoder?

What is space time encoder?

A space–time code (STC) is a method employed to improve the reliability of data transmission in wireless communication systems using multiple transmit antennas. Space–time trellis codes (STTCs) distribute a trellis code over multiple antennas and multiple time-slots and provide both coding gain and diversity gain.

Which is a special case of space time coding?

The Golden code is a particular case of a class of codes known as perfect space-time block codes [DV05].

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 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’).

What is Tx diversity in LTE?

– Transmit Diversity (TxD): On Transmit Diversity mode, the transmitter will send copies of the same data stream by each antenna. This will introduce redundancy on the system. This redundancy makes possible to reduce fading and also have a better signal-nise ratio (SNT) at the receiver.

What is Ostbc?

Abstract: OSTBC(orthogonal space-time block codes) is a new channel coding technology accompanying with the extensive application of wireless communication. It combines coding, modulation, transmit and receive diversity, and validly increases the anti-noise performance in fading channels.

What are the diversities are used in space time coding blocks?

Space time block coding uses both spatial and temporal diversity and in this way enables significant gains to be made.

What does enable adaptivity mean?

It allows you to get greater better signal strength, and thus better throughput, at range. You want it on for both VHT and HT. “Adaptivity” seems to relate to ETSI’s (European Technology Standards Institute’s) adaptive frequency hopping requirements which are mostly for Bluetooth.

What is NPHY rate?

NPHY rate: Set the Physical Layer (NPHY) rate. These rates are only applicable when the 802.11n mode is configured as Automatic. Automatic 802.11n protection: If you select this option, the router will use Request to Send/Clear to Send (RTS/CTS) to improve the performance in 802.11 mixed environments.

What is TM mode in LTE?

In LTE, they give a special name for each of the way of transmission and it is called ‘Transmission Mode’. For example, what we normally call ‘SISO’ (Single Transmission Antenna and Single Reciever Antenna) is called ‘TM1(Transmission Mode 1)’.