基于ieee802.16e協(xié)議的ldpc編碼器的研究與實(shí)現(xiàn)

1、上海交通大學(xué)碩士學(xué)位論文基于IEEE802.16e協(xié)議的LDPC編碼器的研究與實(shí)現(xiàn)姓名：俞華梁申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：軟件工程（集成電路設(shè)計(jì)）指導(dǎo)教師：毛志剛20080101ABSTRACT 第 III 頁 THE STUDY AND IMPLEMENTATION OF LDPC ENCODER AS SPECIFIED IN IEEE 802.16E STANDARD ABSTRACT Low Density Parity Check

2、 codes have received more and more attention because of their excellent performance and low complexity decoding algorithm. LDPC code is a kind of linear block code which is encoded through the way that the information se

3、quence multiplies generator matrix. Although the parity check matrix is defined by very sparse matrix, the generator matrix is not. The complexity of encoding is linearly proportional to the square of code length. Six ma

4、trices have been specified in IEEE802.16e standard while the code length rangs from 576 to 2304 bits. It will consume lots of registers if we take the custom encoding algorithm, which makes it an obstacle in implementati

5、on. Thus，this paper mainly studies the implementation of LDPC encoder in IEEE802.16e standard. Firstly, the paper introduces the fundamental knowledge of LDPC code and reviews the current study status. Then the paper bri

6、efly introduces the principle of LDPC encoding defined in IEEE802.16e. After discussing various LDPC decoding algorithm, the paper presents the comparison of BP and other modified decoding algorithm. Secondly, the Matlab

7、 simulation helps to promote the new encoding algorithm which suits the IEEE80.16e standard well and reduces complexity further. We innovatively promote an overall hardware design method and finish the RTL code and final

8、 hardware implementation. Finally, the co-simulation of Matlab and Verilog has convinced us of the fact that the design meets our demand and can be used in a practical way. KEY WORD：LDPC, encoder, IEEE802.16e, modified R