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PAPR reduction using SLM

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Marina90

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I tried reducing the PAPR by using SLM. but there is not even a change in PAPR can any one help me?
 

cokibolong

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show me your code . may be i can help you
 

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cokibolong

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from your code, i can see that there is no difference between original and slm because you don't choose the lowest papr
why don't you see this example
 

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  • slm.zip
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Marina90

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i wanted to see how much the papr reduce before choosing the minimum one.so you mean only when we choose the lowest the papr will reduce?
 

cokibolong

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according to your script, we can say that 'numRun'. as number of symbols
the problem is we run with a lot of symbol, and every symbol must choose the lowest papr, every symbol has their own phase rotation
 

cwjcwjcwj

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The whole idea of SLM method is to generate a set of alternative data blocks and select the one with the lowest PAPR to transmit. Say, your original data has a PAPR of 12 dB and you multiply your original data with 4 phase sequences which yields 4 set of different data blocks. Let say one of the data blocks has a PAPR of 9 dB which is the minimum among 4 of them. So, the entire process reduce the PAPR from 12 dB to 9 dB.

Hope this helps.
 

Marina90

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thanks both of you.now i clear about it.really appreciate your help:razz:
 

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