Sách VHDL implementation of CORDIC algorithm for wireless LAN

Table of Contents
1 Introduction .1
1.1 About CORDIC 1
1.2 Wireless LAN .1
1.3 Background 2
2 WLAN basics .3
2.1 Modulation .3
2.2 OFDM system model 4
2.3 Maximum likelihood synchronization .6
2.3.1 Correlation properties of r(·) .6
2.3.2 The likelihood function 7
2.3.3 Simultaneous estimation 8
2.3.4 Synchronization .9
2.4 Correcting sample frequency error 10
3 Algorithm .13
3.1 Modes of the CORDIC algorithm .13
3.2 Arithmetics .15
3.3 Another method to implement CORDIC algorithm .17
4 Solution 19
4.1 MATLAB program .19
4.2 VHDL program 24
4.2.1 Interleaving .25
Input control block .27
Arithmetic blocks, CORDIC .28
Output control block .28
4.2.2 Pipelining 29
Input control block 29

Arithmetic blocks .30
Output control block .30
4.3 FPGA implementation 31
5 Conclusion 33
5.1 Future work 33
References .35
Abbreviations 37
Appendix A MATLAB program 39
Appendix B Wave diagrams 41




vhdl implementation of cordic algorithm for wireless LAN