enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Bit error rate - Wikipedia

    en.wikipedia.org/wiki/Bit_error_rate

    Since most such codes correct only bit-flips, but not bit-insertions or bit-deletions, the Hamming distance metric is the appropriate way to measure the number of bit errors. Many FEC coders also continuously measure the current BER.

  3. Eb/N0 - Wikipedia

    en.wikipedia.org/wiki/Eb/N0

    As the description implies, is the signal energy associated with each user data bit; it is equal to the signal power divided by the user bit rate (not the channel symbol rate). If signal power is in watts and bit rate is in bits per second, E b {\displaystyle E_{b}} is in units of joules (watt-seconds).

  4. Hamming code - Wikipedia

    en.wikipedia.org/wiki/Hamming_code

    If we increase the size of the bit string to four, we can detect all two-bit errors but cannot correct them (the quantity of parity bits is even); at five bits, we can both detect and correct all two-bit errors, but not all three-bit errors.

  5. Error correction code - Wikipedia

    en.wikipedia.org/wiki/Error_correction_code

    Low-density parity-check (LDPC) codes are a class of highly efficient linear block codes made from many single parity check (SPC) codes. They can provide performance very close to the channel capacity (the theoretical maximum) using an iterated soft-decision decoding approach, at linear time complexity in terms of their block length.

  6. Cyclic redundancy check - Wikipedia

    en.wikipedia.org/wiki/Cyclic_redundancy_check

    For example, some 16-bit CRC schemes swap the bytes of the check value. Omission of the high-order bit of the divisor polynomial: Since the high-order bit is always 1, and since an n-bit CRC must be defined by an (n + 1)-bit divisor which overflows an n-bit register, some writers assume that it is unnecessary to mention the divisor's high-order ...

  7. Residual bit error rate - Wikipedia

    en.wikipedia.org/wiki/Residual_bit_error_rate

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Help; Learn to edit; Community portal; Recent changes; Upload file

  8. Code rate - Wikipedia

    en.wikipedia.org/wiki/Code_rate

    Note that bit/s is a more widespread unit of measurement for the information rate, implying that it is synonymous with net bit rate or useful bit rate exclusive of error-correction codes. See also [ edit ]

  9. Coding gain - Wikipedia

    en.wikipedia.org/wiki/Coding_gain

    If the average number of nearest neighbors per transmitted bit () is equal to one, the effective coding gain () is approximately equal to the nominal coding gain ().