Calculating an LDPC Note: the 3rd parity bit should be 0, not 1 LDPCs append a series of parity bits to a message. Usually the encoded stream is relatively long — 1024 bits would be a short message.

Correction is not possible with one parity bit since any bit error in any position creates exactly the same information as bad parity. If more bits are integrated ...

図2.13から分かるように、距離が3のコードワード間では、2ビットのエラーが起こると隣のコードワードを囲む1ビットエラーの球に入ってしまう。そして、受信されたデータに対してシンドロームを計算して訂正を行うと、 2ビットのエラーが起こったコード ...

Whenever we send data — whether it’s audio signals over a phone line, a data stream or a legal document — to someone else, we need to know that what arrives on the other end is identical to what we ...

Computers employ a variety of schemes to check whether a chunk of digital information–transmitted as a message, stored in a database, or functioning as a set of instructions–remains error-free. Such ...