WiCOMM-T

WiCOMM-T

WiCOMM-T

Digital modulations are often expressed in terms of I (in-phase) and Q (quadrature) signals, and all modern digital communication systems and gadgets have three main blocks namely:

• Data processing block
• ADC and DAC conversion block
• RF block

All the blocks process the I and Q signals simultaneously, leading to the use of complex algebra and analysis in their design and implementation. This standardized and uniform approach in building digital communication systems or gadgets results in lower cost of development and manufacturing. The focus is also turned towards adding more features and bringing in more techniques within the available RF spectrum.

The Benchmark WiCOMM-T – the ultimate Wireless Digital Communication Training Platform is the actual implementation of modern digital communication systems with direct interface to MATLAB through the Hi-Speed USB port of a PC.

The WiCOMM-T provides maximum flexibility in learning complete digital communication system concepts, which includes digital modulation techniques, Baseband Equalization, Filtering concepts, and the basics of CDMA, GSM etc. MATLAB codes of all suggested experiment topics are available to users as reference. A MATLAB interface to the Platform also allows users to try out other topics on their own.

• Subject Area

  Baseband Digital Communication Link:
  Raised Cosine spectrum pulses
  Timing acquisition algorithm
  Clock tracking & slip control
  Matched filtering – performance in noise
  
  Quadrature Modulation Schemes:
  QPSK (Phase and frequency offset)
  Constellation plots
  Carrier recovery algorithm
  Carrier and Clock Tracking
  
  Adaptive Equalization Techniques:
  Adaptive linear equaliser
  Adaptive decision feedback equaliser
  MSE convergence
  Decision aided channel tracking
  
  GSM:
  GMSK modulation and demodulation
  Viterbi equaliser for GSM
  
  Basics of DS-CDMA:
  Orthogonal and non-orthogonal spreading codes
  Multipath channel estimation for RAKE receiver
  SER performance of RAKE combiner
  
  Basics of OFDM:
  Timing and Frequency synchronisation
  Channel estimation using FFT processing
  Channel estimation using modified LS
  Mean Square Error performance