International Mobile Station Identity (IMSI)

Mobile stations are identified by the identity of the international mobile station Identity (IMSI). The IMSI consists of up to 10 to 15 numeric digits. The first three digits of the IMSI are the country code of the mobile (MCC), the remaining...

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CDMA Capacity

The factors deciding the CDMA capacity are − Processing Gain Signal to Noise Ratio Voice Activity Factor Frequency Reuse Efficiency Capacity in CDMA is soft, CDMA has all users on each frequency and users are separated by code. This means,...

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TDMA - Technology

Time Division Multiple Access (TDMA) is a digital cellular telephone communication technology. It facilitates many users to share the same frequency without interference. Its technology divides a signal into different timeslots, and increases...

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Frequency Division Duplex

In Frequency Division Duplex (FDD), the forward link frequency is not the same as the reverse link frequency. In each link, signals are continuously transmitted in parallel. Example of FDD System FDD requires two symmetrical segments of...

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CDMA - Multiple Access Methods

The possibility to operate in either FDD or TDD mode is allowed for efficient use of available spectrum according to frequency allocation in different regions. Frequency Division Duplex A duplex method whereby the Uplink and the Downlink...

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CDMA - Introduction

What is CDMA? Code Division Multiple Access (CDMA) is a digital cellular technology used for mobile communication. CDMA is the base on which access methods such as cdmaOne, CDMA2000, and WCDMA are built. CDMA cellular systems...

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