IEEE 802.16-2004無線都會網路接收機設計

Abstract

IEEE 802.16是由IEEE(Institute of Electrical and Electronics Engineers)所制定的一系列下一代寬頻無線接取標準，本論文是要設計一個IEEE 802.16-2004 OFDMA PUSC(Partial usage of subchannels)下鏈(Downlink)訊號數位接收機。在接收端設計的部份包含有：下鏈前置訊號(Preamble)能量偵測、保護區間長度偵測、下鏈前置訊號邊界偵測、載波頻率偏移估算、下鏈前置訊號 PN(Pseudo Noise) code偵測及通道估測等，模擬結果顯示設計的效能與理想情況時只有2-dB以內的差異。

IEEE 802.16 is a standard system specified by IEEE (Institute of Electrical and Electronics Engineers) for next generation broadband wireless access. A digital receiver is designed in this thesis for the IEEE 802.16-2004 OFDMA PUSC (Partial Usage of Subchannels) downlink system. The receiver’s functionalities include detection of downlink preamble energy, detection of guard interval length, carrier frequency offset estimation, detection of downlink preamble boundary, detection of downlink preamble PN (Pseudo Noise) code, and channel estimation. Simulation results show that the design is away from the ideal one only within 2-dB.