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CDMA

overview

Code division multiple access (CDMA) is a channel access method used by various radio communication technologies.CDMA is an example of multiple access, which is where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this to be achieved without undue interference between the users, CDMA employs spread-spectrum technology and a special coding scheme (where each transmitter is assigned a code).
prerequisties
  • Attendees need basic networking knowledge.
Duration
Online
  • It is a 8 days program and extends up to 2hrs each.
  • The format is 40% theory, 60% Hands-on.

Corporate
  • It is a 2 days program and extends up to 8hrs each.
  • The format is 40% theory, 60% Hands-on.
Classroom
    Private Classroom arranged on request and minimum attendies for batch is 4.
course content
  • CDMA Review
    • IS-95 Orientation
    • North American standards (TIA)
    • Basic CDMA
    • Spectrum Spreading Process
    • Code Division Multiple Access
    • RAKE receiver
    • Soft handoffs
    • Single user-Single path
    • Single user- Multiple paths
    • Multiple users with single paths
    • Multiple users with Multiple paths
    • Multipath and Rake receivers
    • CDMA vs. Analog FDMA
    • CDMA vs. TDMA

  • CDMA system overview
    • Locating and keeping track of a MS
    • Mobility management
    • Radio resource management
    • Features in a CDMA cellular system
    • Soft hand-offs
    • Power control
    • Forward and reverse links
    • Long and short codes
    • CDMA Channels
    • CDMA physical channels
    • CDMA logical channels
    • Shared vs. dedicated channels
    • Forward and Reserve logical channels
    • CDMA Physical Layer
    • CDMA protocol layering
    • Forward channels
    • Reverse channels

  • PN Codes and Walsh Functions
    • IS-95 features
    • Pseudo Random (PN) codes
    • Orthogonal codes
    • Short PN codes
    • Long PN codes
    • Walsh functions

  • The Forward Link
    • The Pilot channel
    • The Sync channel
    • The Paging channel
    • Forward traffic channels
    • Call and signaling states

  • The Reverse Link
    • The Access channel
    • The Reverse traffic channels
    • Orthogonal modulator
    • Long codes

  • Forward Traffic Channels
    • Forward link structure
    • Variable rate codec
    • Power control channel

  • Power Control
    • The near-Far problem
    • Need for power control
    • Open loop power control (Reverse Link)
    • Closed loop power control (Reverse Link)
    • Forward link power control
    • Power control implications and tradeoffs

  • CDMA Network Architecture
    • Basic structure
    • Switching Functions
    • BSC Functions
    • BTS Functions
    • Forward features

  • CDMA Subscriber Unit Architecture
    • Basic structure
    • Vocoder operation
    • Transmitter operation
    • Receiver operation
    • Handoff protocol & messaging

  • Mobile Station
    • Control on the traffic channel state
    • Forward traffic channel power control
    • Service options
    • Acknowledgment procedures
    • Processing the in-traffic system parameters message
    • Alerting
    • Conversation substate
    • Release substate
    • Mobile station states
    • Paging channel monitoring procedures
    • Acknowledgments
    • Registration
    • Idle handoff
    • Paging channel messages
    • System Parameters message
    • Access Parameters message

  • CDMA Call Processing
    • Call processing flows
    • Registration
    • Utilized services

  • Handoffs
    • Within one CDMA system
    • Multi-cell (soft) Handoff
    • Multi-Sector (softer) Handoff
    • CDMA to CDMA hard handoffs
    • CDMA to Analog hard Handoff
    • Handoff thresholds
    • Trade-offs and implications
    • Handoff Procedures
    • Pilot sets
    • Pilot search
    • Handoff messages
    • Set maintenance
    • Power control during soft handoff
    • Soft handoff scenarios

  • Registration
    • Forms of registration
    • Systems and networks roaming
    • Registration timers and indicators
    • Registration procedures

  • CDMA System Capacity

    • Key capacity parameters
    • Derivation and discussion
    • Soft capacity increase
    • CDMA vs. FDMA vs. TDMA capacity
    • System design and implementation issues
    • Transition planning from analog to CDMA
    • Field trials results

  • CDMA Evolution
    • CDMA standards
    • Future of CDMA
    • Status of Cdma2000
Videos
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