摘要： 作为一种固定宽带无线接入系统，IEEE 802.16d可以提供高达70Mbps的峰值传输速率以支持不同QoS类型的综合数据业务的部署。其物理层协议为支持这一高带宽特性集合了多种调制和信道编码技术，包括随机化、RS-CC编码、交织、多种数字调制技术、OFDM技术，还有可选择采用的空时编码技术。这些技术综合起来的系统性能如何，至今还没有详细准确的结果，而这些结果却是支持自适应链路技术的重要基础参数。文章按照16d协议对物理层进行了仿真和性能分析，提出并验证了用于性能分析的理论近似公式。
关键词:
IEEE 802.16d,
物理层仿真,
OFDM,
RS-CC编码
Abstract: As a kind of fixed BWA system, IEEE 802.16d promises to provide the peak data rate of 70Mbps in order to deploy integrated data service with different QoS. To support this wideband feature, the PHY adopts various modulations and FEC technologies including randomization, RS-CC encoding, interleaving, multiple digital modulation, OFDM and the optional space-time coding. There are no accurate results in regard to the performance of all these deployed technologies yet, however, these results is crucial because it lays the basis for the link adaptation technology. A strict simulation of the PHY is conducted and the performance is evaluated, a theoretical performance estimation formula is proposed and validated.
Key words:
IEEE 802.16d,
PHY simulation,
OFDM,
RS-CC encoding
李武强;刘乃安. IEEE 802.16d WMAN物理层仿真及性能分析[J]. 计算机工程, 2007, 33(04): 76-78.
LI Wuqiang; LIU Naian. IEEE 802.16d WMAN PHY Simulation and Performance Analysis[J]. Computer Engineering, 2007, 33(04): 76-78.