L5. Bit-error control Flashcards
1
Q
Why do bit errors occur when mobile systems transmit and receive packets?
A
Noise
2
Q
Methods for error free packet transmission
A
FEC
Error detection
Retransmission (ARQ)
Combination of all 3
3
Q
What is interleaving in the context of transmitting text message?
A
Re-order the stream of bits produced by the sequence of Ascii charactets so that the bits of each character are not next to each other
4
Q
WHy does interleaving help with error correction?
A
- bit-errors often occur in Bursts
- easier to fix single bit error
