處理一分頻多工訊號之系統及方法SYSTEM AND METHOD FOR PROCESSING A FREQUENCY DIVISION MULTIPLEXING SIGNAL

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/106,681

專利證號

US 8,570,918 B2

專利獲證名稱

處理一分頻多工訊號之系統及方法SYSTEM AND METHOD FOR PROCESSING A FREQUENCY DIVISION MULTIPLEXING SIGNAL

專利所屬機關 (申請機關)

國立交通大學

獲證日期

2013/10/29

技術說明

本技術係有關於採用時頻轉換之通訊系統，如正交分頻多工和正交分頻多重進接等。在無線通訊訊號傳輸中，通道響應會因相對運動的緣故而隨時間改變，這就會在採用時頻轉換之系統中就造成載波間干擾，而且此干擾會隨載波頻率或相對運動速率之增高而提高。由於新一代無線通訊系統會考慮較前高許多的移動速率，也可能考慮更高的載波頻率，載波間干擾就成為其中極需解決的問題。本技術開發載波間干擾頻域相關函數之特性，以降低載波間干擾與雜訊對訊號檢測的衝擊，以致可以大幅增強時變通道下之訊號傳收效能。 The technology is concerned with communication systems that employ time-frequency transformation, such as OFDM and OFDMA. In wireless communication signal transmission, the channel response may change with time due to relative motion. This can cause intercarrier interference (ICI) in a system that employs time-frequency transformation. And this interference can increase with increase in carrier frequency or speed of relative motion. Because new-generation wireless communication systems will consider much higher motion speeds than previously considered and may consider using higher carrier frequencies, ICI becomes a significant problem to be solved. In this proposed technology, the property existing in the frequency-domain correlation function of ICI is exploited to reduce the impact of ICI and noise on signal detection, so that the signal transmission performance over time-varying channels can be significantly enhanced.

備註

本部(收文號1090020336)同意該校109年4月6日交大研產學字第1091002952號函申請終止維護專利(交大)

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