LDACS2 Physical Layer
LDACS2 is proposed L band Digital Aeronautical Communication System for communication between ASs(Aircraft Stations)
and GS(Ground Station).
It is a single carrier based technology and operates as per TDD topology concept.
It operates in the frequency band from 960MHz to 975 MHz.
As this physical layer works on TDD concept.
In TDD, transmissions from ASs and GS are time multiplexed at the same carrier frequency.
The same can be understand from LDACS2 frame structure.
Refer LDACS1 physical layer first before LDACS2 PHY to understand the concept throughly.
Figure-1 depicts LDACS2 physical layer Transmitter. As shown in the figure, data goes through following
steps. In general physical layer transmitter consists of RS Encoder, Convolution encoder, puncturing, interleaver,
frame formation and GMSK modulation as used in GSM standard.
LDACS2 physical layer receiver
In general LDACS2 physical layer receiver consists of front end synchronization (Time, frequency and channel), GMSK demodulation, frame decomposition, deinterleaver, depuncturing, viterbi decoder and RS Decoder.
LDACS(L Band Digital Aeronautical Communication System) RELATED LINKS
Physical layer of other Wireless standards
• 11a physical layer
• LTE Physical layer
• fixed wimax physical layer-OFDM
• 11n physical layer
• wirelessHART physical layer
• Physical layer measurements
• 11b physical layer
• Mobile wimax Physical layer-OFDMA
• GSM Physical layer
• GPRS physical layer
• CDMA physical layer
• TD-SCDMA Physical layer
• WCDMA Physical layer
• WCDMA TDD vs FDD physical layer
• WLAN 11ac physical layer