Cognitive Radio Chip-Hardware Challenges - Hardware Conference

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Linearity vs Noise Apply attenuation: distortion OK but too much noise (NF=20dB, IIP3=+10dBm, RBW=100kHz, att.=48dB) Each dB of attenuation: - Noise floor up by 1dB - Distortion peaks down by 2dB Cognitive Radio Challenges, Eric Klumperink 34
f test [Oude Alink et al, DySPAN 2010] Idea to improve Spectrum Analysis Idea to “get rid of the noise”: – a) Duplicate receiver – b) Cross-correlate outputs Result: correlated signal (and noise) Atten. ADC FFT out f test X-corr out Atten. ADC FFT Cognitive Radio Challenges, Eric Klumperink 35
Page 1 and 2: Cognitive Radio Chip-Hardware Chall
Page 3 and 4: Static Frequency Allocation Almost
Page 5 and 6: Applications more capacity more us
Page 7 and 8: Cognitive Radio Hardware Challenge
Page 9 and 10: How much Path Loss: “inverse squa
Page 11 and 12: Long distance large loss High SND
Page 13 and 14: Downconversion / filtering required
Page 15 and 16: Overview • Introduction Cognitive
Page 17 and 18: How implement RF band-filtering Q 1
Page 19 and 20: Flexible Integrated Filter Idea f S
Page 21 and 22: Filter Properties: flexibly tunable
Page 23 and 24: Cognitive Radio Transmitter Current
Page 25 and 26: Multipath Polyphase Technique (2) A
Page 27 and 28: N-PATH: First Non-cancelled Compone
Page 29 and 30: Cancelling Harmonics/Sidebands 1-pa
Page 31 and 32: Spectrum Sensing: shadowing problem
Page 33: Linearity vs Noise Effect of non-li
Page 37 and 38: XCSA: Measurements III RBW=10kHz si
Page 39: Questions Cognitive Radio Challenge

Cognitive Radio Chip-Hardware Challenges - Hardware Conference

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