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 视图,视图更新删除
查看>>
MySQL 触发器
查看>>
mysql 让所有IP访问数据库
查看>>
mysql 记录的增删改查
查看>>
MySQL 设置数据库的隔离级别
查看>>
MySQL 证明为什么用limit时,offset很大会影响性能
查看>>
Mysql 语句操作索引SQL语句
查看>>
MySQL 误操作后数据恢复(update,delete忘加where条件)
查看>>
MySQL 调优/优化的 101 个建议!
查看>>
mysql 转义字符用法_MySql 转义字符的使用说明
查看>>
mysql 输入密码秒退
查看>>
mysql 递归查找父节点_MySQL递归查询树状表的子节点、父节点具体实现
查看>>
mysql 通过查看mysql 配置参数、状态来优化你的mysql
查看>>
mysql 里对root及普通用户赋权及更改密码的一些命令
查看>>
Mysql 重置自增列的开始序号
查看>>
mysql 锁机制 mvcc_Mysql性能优化-事务、锁和MVCC
查看>>
MySQL 错误
查看>>
mysql 随机数 rand使用
查看>>
MySQL 面试题汇总
查看>>
MySQL 面试,必须掌握的 8 大核心点
查看>>