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A New TR-UWB Receiver Exploiting Frequency Components Seonkeol Woo, Hoongee Yang, Sunghyum Yang, Youngsoo Kim, Jonggwan Yook and Bongsoon Kang IEICE TRANS. COMMUN., VOL.E91-B, NO.5 MAY 2008 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Presented By: S M Riazul Islam

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2 Objective Presenting a new TR-UWB receiver 1.Separating frequency-component of UWB pulses into real and imaginary parts 2.Independently correlating and 3.Effectively combining 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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3 Introduction to TR-UWB 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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4 Proposed System Assume a function for D-delayed reference pulse, Using Parsevals theorem, Replacing the expression for data pulse, To implement frequency domain integral,, Under AWGN, a frequency component of a D-delayed reference pulse at f=fn can be expressed as, The frequency component of a data pulse at f=fn, 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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5 Proposed System A discrete form of z is, Thus a receiver to implement (7) uses the decision rule, Accordingly (9) can be written as, 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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6 Proposed System The resultant SNR at the correlator output, And BER performance is given by, (8), and (10) X+Y as sufficient statistics Slope, 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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7 Proposed System Let us rotate the coordinate clockwise by, Tow message points are relocated at The decision rule becomes, 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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8 Frequency Domain Based TR-UWB Rx Block, Real part-sum and, correspond to X Block, imaginary-part sum, correspond to Y 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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9 Simulation Parameter and Result 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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10 Conclusion A frequency-domain based TR-UWB receiver is proposed and its performance is analyzed It shows Performance improvements over the previous system using simple complex correlation Improvement is gradually noticeable as gets farther away from 45 deg 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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11 My Opinion Why this paper? A variation of TR-UWB Major Contribution Separation UWB pulse into real and imaginary parts Shortcomings! It needs extra signal processing task and phase calibration SNR is doubled. But BER Curve! Addenda Introducing Weighting factor may improve the performance It may be justified for WBAN 08/12/2008 Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab Inha Telecom Lab

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12 Thank You

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