淘宝官方店推荐课程在线工具联系方式关于我们

	微波射频仿真设计 Ansoft Designer 中文培训教程 \| HFSS视频培训教程套装
	Agilent ADS 视频培训教程 \| CST微波工作室视频教程 \| AWR Microwave Office

首页 >> Ansoft Designer >> Ansoft Designer在线帮助文档

Ansoft Designer / Ansys Designer 在线帮助文档：

System Simulator >
System Component Models >
IEEE802dot11a >
Demodulator, 802.11a (DEMOD11A)

Demodulator, 802.11a (DEMOD11A)

Property	Description	Units	Default	Range/Type
MODULATION	Modulation Type	None	0	[0, 3]/Integer
DECISION	Hard decision {0}/ Soft decision {1}	None	0	[0, 1]/Integer
RIN	Input impedance	Ohm	Inf	(0, Inf]/Real
ROUT	Output impedance	Ohm	0	[0, Inf)/Real
Ports
Input	Signal before demodulation (complex)
Output	Signal after demodulation (real)

Limits

Notes

1. This model can be used for demodulation according to Gray-coded constellation mappings^[1]. For details, please refer to the MOD11a model.

2. Hard decision demodulator makes a definite determination of whether a zero or one bit was transmitted, thus the outputs of the demodulator are zeros and ones. Soft decision demodulator outputs information of the reliability of the decision along with a zero or one bit. The sign of the soft decision indicators a zero or one bit, and the absolute value of each soft decision is the distance to the decision boundary^[2].

Netlist Form

DEMOD11A:NAME n1 n2 [MODULATION =val] [DECISION = val]
+ [RIN=val] [ROUT=val]

Netlist Example

DEMOD11A:1 1 2 MODULATION = 2

References

1. [1] IEEE Std 802.11a, Part 11: “Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: High-speed Physical Layer in the 5 GHz Band,” ISO/IEC 8802-11:1999/Amd 1:2000(E).

2. [2]J. Terry and J. Heiskala, Proakis, OFDM Wireless LANs: A Theoretical and Practical Guide, Sams Publishing, 2002.

HFSS视频教程 ADS视频教程 CST视频教程 Ansoft Designer 中文教程


Copyright © 2006 - 2013 微波EDA网, All Rights Reserved 业务联系：mweda@163.com