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事务与锁详解
查看>>
MySQL事务原理以及MVCC详解
查看>>
MySQL事务及其特性与锁机制
查看>>
mysql事务理解
查看>>
MySQL事务详解结合MVCC机制的理解
查看>>
MySQL事务隔离级别:读未提交、读已提交、可重复读和串行
查看>>
MySQL事务隔离级别:读未提交、读已提交、可重复读和串行
查看>>
webpack css文件处理
查看>>
mysql二进制包安装和遇到的问题
查看>>
MySql二进制日志的应用及恢復
查看>>
mysql互换表中两列数据方法
查看>>
mysql五补充部分:SQL逻辑查询语句执行顺序
查看>>
mysql交互式连接&非交互式连接
查看>>
MySQL什么情况下会导致索引失效
查看>>
Mysql什么时候建索引
查看>>
MySql从入门到精通
查看>>
MYSQL从入门到精通(一)
查看>>
MYSQL从入门到精通(二)
查看>>
mysql以下日期函数正确的_mysql 日期函数
查看>>
mysql以服务方式运行
查看>>