[88身障][資料通訊(資通網路)]漢明考題 - 考試
By Isla
at 2015-05-27T18:34
at 2015-05-27T18:34
Table of Contents
題目:
假設使用漢明碼(Haming code) 以改正單一位元之傳輸錯誤
(Single-bit transmission errors),其間採用偶同位元
(Even parity)。
(1)試問此漢明碼之漢明距離至少為多少?
(2)今欲傳輸之數據為1010101,是計算其相對之漢明碼。
第一小題我的解答跟講義一樣
問題在於第二小題
我的解法:
數據
1 2 3 4 5 6 7
1 0 1 0 1 0 1
P0 => {1, 3, 5, 7} => 1111
P1 => {2, 3, 6, 7} => 0101
P2 => {4, 5, 6, 7} => 0101
結果 => P0P1P2 => 111101010101
講義答案:11110100101
我是哪一步做錯了嗎?
祝大家金榜題名
--
假設使用漢明碼(Haming code) 以改正單一位元之傳輸錯誤
(Single-bit transmission errors),其間採用偶同位元
(Even parity)。
(1)試問此漢明碼之漢明距離至少為多少?
(2)今欲傳輸之數據為1010101,是計算其相對之漢明碼。
第一小題我的解答跟講義一樣
問題在於第二小題
我的解法:
數據
1 2 3 4 5 6 7
1 0 1 0 1 0 1
P0 => {1, 3, 5, 7} => 1111
P1 => {2, 3, 6, 7} => 0101
P2 => {4, 5, 6, 7} => 0101
結果 => P0P1P2 => 111101010101
講義答案:11110100101
我是哪一步做錯了嗎?
祝大家金榜題名
--
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