EE597_Homework1_spring13

Explain in your own words in 1 2 paragraphs for each

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Unformatted text preview: lot the probability that the channel is good (1) in k discrete time steps, given that it is currently bad (0), for k ranging from 1 to 10. 8. Explain in your own words (in 1- 2 paragraphs for each plus any figures if helpful) the following concepts. Feel free to look at the Goldsmith or any other communications book or online for additional information about these, but clearly cite the source in your write- up. a) Delay Spread, Coherence Bandwidth & ISI b) Doppler Spread and Coherence Time c) Direct Sequence Spread Spectrum d) Turbo Codes e) Direct- Mapped and Pre- coded MIMO for multiplexing (read and use this reference: http://djw.cs.washington.edu/papers/mimo_for_dummies.pdf ) 9. (Rate Calculation) Compute the data rate of an 802.11a system assuming QPSK and rate 2/3 coding. 10. (Fading) Read the paper “Multipath Fading in Wireless Sensor Networks: Measurements and Interpretation” by D. Puccinelli and M. Haenggi online at http://www.nd.edu/~mhaenggi/pubs/iwcmc06.pdf. Answer the following questions: • • What do the authors mean when they talk about deterministic fading? How is this related to the probabilistic view of fading? What point do the authors make about narrowband (CC1000) versus wideband radios (CC2420) used in wireless sensor networks?...
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This note was uploaded on 02/27/2013 for the course EE 597 taught by Professor Kosko during the Spring '13 term at USC.

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