Signal Processing

Waveforms Synchronization Channel Estimation and Equalization Error Correction and Detection Channel Models Modulation Schemes Multiple Antenna Processing Computing Engines
Waveforms
  • Satcom: DVB - S2, RCS, SH
  • 5G
  • DSSS
  • MC-CDMA
  • Legacy waveforms AM/FM
  • Proprietary waveforms for Voice, Video and Data
Synchronization
  • Accurate timing synchronization
    • Correlation based
    • Gardner’s Loop
  • Carrier Frequency Correction
    • LR
    • Autocorrelation
    • Costas Loop
  • Modulation Classification
  • Advanced Iterative Decoder – Per Survivor Processing
Channel Estimation and Equalization
  • Zero Forcing
  • MMSE
  • Adaptive algorithms
Error Correction and Detection
  • Cyclic Redundancy Check
  • Convolution codes and Viterbi algorithm
  • Burst Error correcting block codes
  • LDPC codes
  • BCH codes
  • Trellis product codes
  • Turbo product codes
Channel Models
  • AWGN
  • Fading channels
  • Multipath delay spread
  • Channel models in Indian scenarios
  • Mission Specific
Modulation Schemes
  • BPSK
  • QPSK
  • 8-PSK, D8PSK
  • 16-QAM, 64-QAM (Square/Circular)
  • 256-QAM
  • Soft Demapper
  • Hybrid Mapper
  • Multiple Access Schemes - TDD, FDD, OFDMA
Multiple Antenna Processing
  • MIMO detection algorithms
  • ZF, MMSE, Sphere Decoder
  • Pre-coding
  • Large MIMO
  • MU-MIMO
Computing Engines
  • FPGA (Reconfigurable)
  • Mixed Signal Design
  • Hybrid Processor
  • Heterogeneous Computing