硬判決譯碼 的英文怎麼說
中文拼音 [yìngpànjuéyìmǎ]
硬判決譯碼
英文
hard decision decoding- 硬 : 形容詞1 (堅硬) hard; stiff; tough 2 (剛強; 堅定; 強硬) strong; firm; tough; obstinate 3 (勉...
- 判 : Ⅰ動詞1 (分開; 分辨) distinguish; discriminate 2 (評定) judge; decide 3 (判決) sentence; con...
- 決 : Ⅰ動詞1 (作出主張; 決定) decide; determine 2 (執行死刑; 殺死) execute a person 3 (裂開; 斷開...
- 譯 : 動詞(翻譯) translate; interpret
- 碼 : Ⅰ名詞(表示數目的符號或用具) a sign or object indicating number; code Ⅱ量詞1 (指一件事或一類的...
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Hard decision decoding
硬判決譯碼Since soft - decision decoding needs much more computation, it is so complex as to be infeasible in many applications
但是軟判決譯碼比硬判決譯碼要進行更多的譯碼計算,復雜度較高,從而限制了它的應用范圍。Chapter five discusses de - mapping and soft information extraction in dvb - t receiver and gives the performance comparison of soft decision decoding and hard decision decoding
第五章首先介紹軟判決的基本原理,然後分析軟信息提取及解映射的過程,最後給出了軟判決譯碼和硬判決譯碼的性能模擬結果。The viterbi decoder with hard decision designed by the paper, is aimed at ( 3, 1, 9 ) convolutional coding. the data rate is 9. 6kbps. the data rate received by the rake receiver is spreaded by 127 - bit spread sequences, added pilot signals and modulated by qpsk
該課題所設計viterbi譯碼是針對( 3 , 1 , 9 )卷積碼的硬判決譯碼,數據速率為9 . 6kbps ; rake接收機所接收的數據是擴頻因子為127 、加入導頻且經qpsk調制的擴頻信號,使用verilg硬體描述語言在xilinx公司的ise環境下在用現場可編程門陣列( fpga )來實現viterbi譯碼器和rake接=收機的功能。Based on tanner graph, the representation and construction of ldpc codes are addressed, and the two decoding algorithm for ldpc codes, i. e, bit - flipping algorithm and sum - product algorithm, are discussed. from two aspects - minimum distance and the failure of independence assumption, the impacts of cycles to the performance of ldpc codes are analyzed. 2
基於tanner圖模型,詳細介紹了ldpc碼的表示和構造;介紹了ldpc碼的硬判決譯碼(比特翻轉演算法)和軟判決迭代譯碼(和積演算法) ;從最小距離和獨立性假設失效兩個方面分析了環的存在對ldpc碼譯碼性能的影響; 2For practical implementations, simpler decoding algorithms have been suggested. this decoder implements iterative decoding of tpcs using a soft - input hard - output decoder, followed by reliability calculations to obtain oft - decisions from the hard - output of the decoder. the performance of this decoder is nearly optimal and thus the decoding strategy presents a good compromise
針對實際應用中存在的計算復雜問題,在重復譯碼實現中採用軟進/硬出的簡化演算法,用可靠度估計從硬判決輸出中獲得軟信息,從而使譯碼器在性能優越和計算簡便之間獲得了一個很好的折中,並通過硬體實現了tpc的實時解碼,在低信噪比( eb / n0 )的條件下取得了非常低的誤碼率。分享友人