【摘要】 在简要介绍正交频分复用 (Orthogonal frequency division multiplexing,OFDM) )原理的基础上 ,提出采用多片 TI公司近年推出的 TMS32 0 C6 2 0 1B定点 DSP芯片 ,构成流水线实时实现宽带高速 OFDM的硬件平台。实验证明传输码率可达到 12 0 Mbps。文中还较为详细地叙述了系统的硬件构成和软件流程。更多还原

【Abstract】 The wireless wideband data transmission is gaini ng more and more interests. OFDM (Orthogonal frequency division multiplexing), a s a core technology is being widely used in DVB, DAB and 3G mobile communi cation. OFDM is a multicarrier transmission technique, which divides the availab le spectrum into many carriers, each one being modulated by a low rate data stre am. The platform with multiple fixed-point TMS320C6201B pipelined to reali ze wideband high-speed OFDM in realtime is presented. The data rate can up 120 Mbps in experiment. First the principle of OFDM and the outline of TMS320C6000 series DSP are reviewed, then the hardware structure and software flowchart and the implementation of the system are given. Finally t he experimental results and possible improvements are discussed. In particular, the design and the performance of two pipeling schemes are compared.更多还原