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WiMAX – Comprehensive

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  • Overview of 3G Cellular Systems
    • CDMA2000, WCDMA, HSPA, 1xEV-DV
    • Migration paths (key influencing factors)
    • Network architecture overview
    • Available theoretical data rates
  • Review of Modulation Schemes
    • Complex envelope representation of signals and sub-systems
    • BPSK, QPSK, 16-QAM, 64-QAM
    • Modulation scheme migration path
    • BER performance comparison
    • Discussion of the impact on Tx and Rx implementations
    • SNR and Eb/No definitions
  • Propagation Channel Modeling
    • AWGN
    • Rayleigh/Ricean fading (mechanisms governing this phenomenon)
    • Delay spread and concept of frequency selectivity (indoors vs. outdoors)
    • Lognormal fading
    • Path loss models
    • Measured path loss comparisons (indoors vs. outdoors)
  • Performance Improvement Methods
    • FEC (convolutional, turbo, LDPC) codes
    • Encoding principles (block processing, trellis, etc.)
    • Decoding principles (Viterbi Algorithm, MAP, etc.)
    • Receive antenna diversity (switched, MRC and optimal combining)
    • Transmit Antenna diversity (STBC, TxAA, MIMO)
  • Multipath Mitigation
    • Presentation how different standards resolve multipath
    • TDMA vs. CDMA vs. OFDMA solutions
    • Discussion of throughput vs. data rate
  • OFDM Principles
    • Transmission and modulation (sub-carrier, IFFT, S/P, etc.)
    • Sub-carrier discussion
    • Reception and demodulation (FFT, P/S, etc.)
    • Purpose of the Cyclic Prefix (CP)
    • Comparison to 3GPP LTE (uplink and downlink)
    • Signal processing discussion
    • OFDM receiver (channel estimation, etc.)
    • MIMO (channel capacity, MAP decisions, MMSE equalization, etc.)
  • IEEE 802.16 Physical Layer
    • HARQ (comparisons to HSDPA and LTE)
    • Discussion of the uplink channels
    • Adaptive modulation and coding
    • TDD and FDD principles (benefits of both will be discussed)
    • Discussion of the downlink channels
    • Bandwidth tradeoffs and options
  • WiMax Signaling Discussions
    • Layer 1, Layer 2 and Layer 3 overview
    • Higher layer signaling
    • MAC functionality
    • Security architecture (authentication, integrity, etc.)
  • System Analysis
    • Network architecture
    • Mobility use cases (handoffs, idle mode, etc.)
    • System performance
    • Operating frequency bands available
    • Link budget examples (discussion of important parameters to optimize)
  • Wrap-up: Course Recap and Discussion

 

 

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