of;
Physics;
and;
Telecommunications,;
South;
China;
Normal;
University,;
Guangzhou;
510630,;
China;
of;
Information;
Science;
and;
Technology,;
Sun;
Yat-sen;
University,;
Guangzhou;
510026,;
China;
OFDM系统; 信道估计; 训练序列; MIMO; 符号检测; 时变; 叠加; 电视频道;