博客
关于我
PSK星座对象(constellation.cc)
阅读量:281 次
发布时间:2019-03-01

本文共 1921 字,大约阅读时间需要 6 分钟。

BPSK:

constellation_bpsk::constellation_bpsk()    {      d_constellation.resize(2);      d_constellation[0] = gr_complex(-1, 0);      d_constellation[1] = gr_complex(1, 0);      d_rotational_symmetry = 2;      d_dimensionality = 1;      calc_arity();    }

QPSK:

constellation_qpsk::constellation_qpsk()    {      d_constellation.resize(4);      // Gray-coded      d_constellation[0] = gr_complex(-SQRT_TWO, -SQRT_TWO);      d_constellation[1] = gr_complex(SQRT_TWO, -SQRT_TWO);      d_constellation[2] = gr_complex(-SQRT_TWO, SQRT_TWO);      d_constellation[3] = gr_complex(SQRT_TWO, SQRT_TWO);      /*        d_constellation[0] = gr_complex(SQRT_TWO, SQRT_TWO);        d_constellation[1] = gr_complex(-SQRT_TWO, SQRT_TWO);        d_constellation[2] = gr_complex(SQRT_TWO, -SQRT_TWO);        d_constellation[3] = gr_complex(SQRT_TWO, -SQRT_TWO);      */      d_pre_diff_code.resize(4);      d_pre_diff_code[0] = 0x0;      d_pre_diff_code[1] = 0x2;      d_pre_diff_code[2] = 0x3;      d_pre_diff_code[3] = 0x1;      d_rotational_symmetry = 4;      d_dimensionality = 1;      calc_arity();    }
DQPSK:

constellation_dqpsk::constellation_dqpsk()    {      // This constellation is not gray coded, which allows      // us to use differential encodings (through diff_encode and      // diff_decode) on the symbols.      d_constellation.resize(4);      d_constellation[0] = gr_complex(+SQRT_TWO, +SQRT_TWO);      d_constellation[1] = gr_complex(-SQRT_TWO, +SQRT_TWO);      d_constellation[2] = gr_complex(-SQRT_TWO, -SQRT_TWO);      d_constellation[3] = gr_complex(+SQRT_TWO, -SQRT_TWO);      // Use this mapping to convert to gray code before diff enc.      d_pre_diff_code.resize(4);      d_pre_diff_code[0] = 0x0;      d_pre_diff_code[1] = 0x1;      d_pre_diff_code[2] = 0x3;      d_pre_diff_code[3] = 0x2;      d_apply_pre_diff_code = true;      d_rotational_symmetry = 4;      d_dimensionality = 1;      calc_arity();    }

转载地址:http://ibgo.baihongyu.com/

你可能感兴趣的文章
mysql 添加索引
查看>>
MySQL 添加索引,删除索引及其用法
查看>>
mysql 状态检查,备份,修复
查看>>
MySQL 用 limit 为什么会影响性能?
查看>>
MySQL 用 limit 为什么会影响性能?有什么优化方案?
查看>>
MySQL 用户权限管理:授权、撤销、密码更新和用户删除(图文解析)
查看>>
mysql 用户管理和权限设置
查看>>
MySQL 的 varchar 水真的太深了!
查看>>
mysql 的GROUP_CONCAT函数的使用(group_by 如何显示分组之前的数据)
查看>>
MySQL 的instr函数
查看>>
MySQL 的mysql_secure_installation安全脚本执行过程介绍
查看>>
MySQL 的Rename Table语句
查看>>
MySQL 的全局锁、表锁和行锁
查看>>
mysql 的存储引擎介绍
查看>>
MySQL 的存储引擎有哪些?为什么常用InnoDB?
查看>>
Mysql 知识回顾总结-索引
查看>>
Mysql 笔记
查看>>
MySQL 精选 60 道面试题(含答案)
查看>>
mysql 索引
查看>>
MySQL 索引失效的 15 种场景!
查看>>