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# System prepended metadata

title: D1101ET007DE IVC 22 July

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# D1101ET007DE IVC 22 July

Communication can be available on any form such as:

1. Verbal communication/speaking
2. Using smell (ants)

Maximum data rate limited by signal power, noise power and distortion
Without distortion or noise, we can transmit R=unlim, with probability P=0

C=1/2 B * log(1+SNR)


The importance of bandwitdh can reflect how much data rate we can have
Higher frequency means higher bandwitdh but less range
Lower frequency means lower bandwidth but higher range

In some wireless standards, we may use multiple FEC types (e.g. convolutional and LDPC) in the same system. To allow the receiver decode the received data using the correct FEC scheme, we send the configuration (e.g. type of FEC) in signaling frame.


BER Bit error rate: fraction of bits in error
BLER block error rate: fraction of blocks that have at least one error

# LINK Bufget

#rayleigh fading
