An efficient coherent demodulation algorithm for TETRA communication system
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"An efficient coherent demodulation ..." refers background in this paper
...…after phase decisions according to Table I [3] is ( ) 0 1decision ky k d k N= ≤ ≤ − (3) When noise is small, make the conjugate multiplication between (2) and (3) ( ) ( )12 0 1j f f Ty k e k Nπ ∆ −∆∆ ≈ ≤ ≤ − (4) Averaging the error over N points, get the frequency offset estimation error 2f∆ ....
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...…− ≤ ≤ − (5) After sectioned phase compensation Supported by China Electronic Information Industry Development Fund – IOP Test and Verification System of TETRA Digital Trunking System 978-1-4799-5970-9 © 2014 IEEE642 ( ) ( ) ( )2 3 ( 1) 1ej f f kTcn ky k c e n k n M k nMπ ∆ −∆= + − ≤ ≤ − (6) The…...
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...( ) ( )2 ( 1) 1j fkTn ky k c e n k n M k nMπ∆= + − ≤ ≤ − (5) After sectioned phase compensation Supported by China Electronic Information Industry Development Fund – IOP Test and Verification System of TETRA Digital Trunking System 978-1-4799-5970-9 © 2014 IEEE642 ( ) ( ) ( )2 3 ( 1) 1ej f f kTcn ky k c e n k n M k nMπ ∆ −∆= + − ≤ ≤ − (6) The sectioned signal after phase decisions which will be described in detail in Section III is given as ( ) ( 1) 1n kyd k c n M k nM= − ≤ ≤ − (7) Make the conjugate multiplication between (6) and (7)....
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Additional excerpts
...Simulate 1000 times per symbol....
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"An efficient coherent demodulation ..." refers background in this paper
...…after phase decisions according to Table I [3] is ( ) 0 1decision ky k d k N= ≤ ≤ − (3) When noise is small, make the conjugate multiplication between (2) and (3) ( ) ( )12 0 1j f f Ty k e k Nπ ∆ −∆∆ ≈ ≤ ≤ − (4) Averaging the error over N points, get the frequency offset estimation error 2f∆ ....
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