Full Form of CDM

What is CDMA Full Form?

CDMA full form is Code Division Multiple Access.

What is Code Division Multiple Access?

Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, 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 without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme (where each transmitter is assigned a code).[1][2]

CDMA optimizes the use of available bandwidth as it transmits over the entire frequency range and does not limit the user's frequency range.

It is used as the access method in many mobile phone standards. IS-95, also called "cdmaOne", and its 3G evolution CDMA2000, are often simply referred to as "CDMA", but UMTS, the 3G standard used by GSM carriers, also uses "wideband CDMA", or W-CDMA, as well as TD-CDMA and TD-SCDMA, as its radio technologies.

It can be also used as a channel or medium access technology, like ALOHA for example or as a permanent pilot/signalling channel to allow users to synchronize their local oscillators to a common system frequency, thereby also estimating the channel parameters permanently.

In these schemes, the message is modulated on a longer spreading sequence, consisting of several chips (0es and 1es). Due to their very advantegous auto- and crosscorrelation characteristics, these spreading sequences are also used for radar applications since many decades, where they are called Barker-Codes (with a very short sequence length of typically 8 to 32).

For space based communication applications, it is also used since many decades, due to the large pathloss and Doppler-shift caused by the satellite motion. Typically in those applications, neither FDMA nor TDMA is used as a single modulation, due to this effect. CDMA is often used with BPSK in its simplest form, but can be combined with any modulation scheme like in advanced cases QAM or OFDM, which typically makes it very robust and efficient (and equipping them with accurate ranging capabilities, which is difficult without CDMA). Other schemes use subcarriers based on binary offset carrier (BOC), which is inspired by Manchester codes and enable a larger gap between the virtual center frequency and the subcarriers, which is not the case for OFDM subcarriers.

Code Division Multiple Access (CDMA) is a sort of multiplexing that facilitates various signals to occupy a single transmission channel. It optimizes the use of available bandwidth. The technology is commonly used in ultra-high-frequency (UHF) cellular telephone systems, bands ranging between the 800-MHz and 1.9-GHz.

What is BCDM Full Form?

BCDM is full form Business Control and Decision Making

 What is Business Control and Decision Making?

In psychology, decision-making is regarded as the cognitive process resulting in the selection of a belief or a course of action among several possible alternative options. It could be either rational or irrational.

What is CDMA Full Form?

CDMA is full form Code Division Multiple Access

What is Code Division Multiple Access?

Code-division multiple access is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies. 

What is CDMC Full Form?

CDMC is full form Center For Distributed And Mobile Computing

What is Center For Distributed And Mobile Computing?

The school has an objective of promoting study and research activities in various areas of Mobile Computing and Distributed Computing.

What is CCDM Full Form?

CCDM is full form Cash & Cheque Deposit Machines

What is Cash & Cheque Deposit Machines?

The Cash Deposit Machine, better known as Automated Deposit cum Withdrawal Machine (ADWM) is an ATM like machine that allows you to deposit cash directly into your account using the ATM cum debit card. You can use this machine to instantly credit your account without visiting the branch.

What is MCDM Full Form?

MCDM full form is Master of Communication in Digital Media.

What is Master of Communication in Digital Media?

MA (Communication & Digital Media) is a 2-year postgraduate course, open to students of any stream. The course can be pursued after successful completion of graduation from a recognized university, with a minimum aggregate score of 50%.
 

What is ACDM Full Form?

ACDM full form is Architecture Centric Development Method.

What is Architecture Centric Development Method?

The architecture-centric design method (ACDM) is an iterative process used to design software architectures. It is a lightweight method with a product focus and seeks to ensure that the software architecture maintains a balance between business and technical concerns.
 

What is ACDM Full Form?

ACDM full form is Architecture centric design method.

What is Architecture centric design method?

The architecture-centric design method (ACDM) is an iterative process used to design software architectures. It is a lightweight method with a product focus and seeks to ensure that the software architecture maintains a balance between business and technical concerns.

What is CDM Full Form?

CDM full form is Cold Dark Matter.

What is Cold Dark Matter?

In cosmology and physics, cold dark matter is a hypothetical type of dark matter. According to the current standard model of cosmology, Lambda-CDM model, approximately 27% of the universe is dark matter.

What is CDMH Full Form?

CDMH full form is Cold Dark Matter Halo.

What is Cold Dark Matter Halo?

According to modern models of physical cosmology, a dark matter halo is a basic unit of cosmological structure. It is a hypothetical region that has decoupled from cosmic expansion and contains gravitationally bound matter.