3GPP W-CDMA Algorithmic (Behavioral) Models

3GPP FDD W-CDMA Design Library contains the following pre-built algorithmic models. These models are also known as behavioral models.

The models can be used as a starting-point for designs, or to provide the baseband functionality needed to begin evaluation of RF, system, and baseband designs.

• User-Equipment and Base Station configurable sources
  
• Basestation Test Models
  
• Rate 1/2 and 1/3 convolutional coding
  
• Rate 1/3 turbo coding
  
• Interleaving/De-interleaving
  
• Rate matching and multiplexing
  
• 4/8/16/32/64/128/256/512 Orthogonal Variable-Spreading Factors (OVSF)
  
• Hybrid Phase-Shift Keying (HPSK) complex scrambling 12.2/64/144/384/2048 kbps data rates
  
• Physical channel mapping and multiplexing
  
• Multiple-code channels
  
• Transport format channel indicator (TFCI)
  
• Six-finger rake receiver
  

Physical Layer Models

3GPP FDD W-CDMA Design Library models the physical layer, including the data and control logical channels, frame segmenting and multiplexing forming the coded-composite transport channel, and multiplexing for the dedicated physical data and control channels.

Multiple transport channels are multiplexed for transmission on one physical channel. OVSF codes with multiple spreading factors are used to support multiple data rates. HPSK modulation is used for uplink scrambling to reduce the peak-to-average ratio.

The library also includes a six-finger RAKE receiver to improve reception when the delay spreads are significant.

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