کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
303615 | 512748 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Iterative clipping recovery in spatially multiplexed OFDM systems Iterative clipping recovery in spatially multiplexed OFDM systems](/preview/png/303615.png)
Clipping and filtering is a well-known technique used at the transmitter side of Orthogonal Frequency Division Multiplexing (OFDM) systems to reduce the Peak to Average Power Ratio (PAPR). In this paper, the extension of clipping and filtering to spatially multiplexed OFDM systems will be introduced. In the proposed scheme, the channel coding and clipping operations are performed at the transmitter branches independently. Based on this scheme, a receiver is proposed, which is based on the detection method of Nulling Cancellation (NC). In this method, the layer with the minimum average noise power over all subcarriers is selected and an iterative method is used to compensate for its clipping noise. Then, the effect of the signal of the selected antenna is eliminated from the received vectors.
Journal: Scientia Iranica - Volume 19, Issue 3, June 2012, Pages 739–744