【摘要】 提出了一种OFDM的推广形式,将复码元的实部和虚部分别采用不同的脉冲成形进行调制。把这种调制形式称为G-OFDM。讨论了G-OFDM的脉冲成形和星座图设计问题。数值仿真表明,G-OFDM在频率色散信道的性能优于传统OFDM,同时这一优势并未降低系统对抗AWGN及时间色散的性能。更多还原

【Abstract】 A generalized form of OFDM was presented, termed G-OFDM. In such a system, the real and imaginary parts of complex symbols were modulated separately using different pulse shaping. The issue of pulse shaping design as well as constellations design for the G-OFDM was discussed. Numerical simulations show that G-OFDM outperforms traditional OFDM in frequency-dispersive channel, and this advantage does not sacrifice its performance in AWGN immunity or time-dispersion robustness.更多还原