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What is 2G Technology?

 

2G connectivity was introduced in the mid-1990s. It exposed us to data networks, or PSDNs, and voice communication through phone calls. In the case of 2G GSM, each communication channel had a frequency of 200 KHz and could connect up to eight users at once. FDM (frequency division multiplexing) and TDM (time division multiplexing) were two popular modulation techniques for 2G. (time division multiplexing). But why are we talking about 2G here? G's have evolved primarily in operating frequency, bandwidth, and modulation techniques. Similarly, the bandwidth of each channel in 3G is about 1.25 MHz. The frequency range for 4G will be between 5 and 20 MHz. FDMA (frequency division multiplexing access), TDMA (time division multiplexing access), and CDMA (code division multiplexing access) were the most prevalent modulation techniques for 3G. (code division multiplexing access). For 3G, CDMA was a common modulation technique. 3G was launched in 2001, while 4G was launched around 2010. For 4G communication, OFDM was a popular multicarrier modulation scheme.

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MATLAB code for MSK

 Copy the MATLAB Code from here % The code is developed by SalimWireless.com clc; clear; close all; % Define a bit sequence bitSeq = [0, 1, 0, 0, 1, 1, 1, 0, 0, 1]; % Perform MSK modulation [modSignal, timeVec] = modulateMSK(bitSeq, 10, 10, 10000); % Plot the modulated signal subplot(2,1,1); samples = 1:numel(bitSeq); stem(samples, bitSeq); title('Original message signal'); xlabel('Time (s)'); ylabel('Amplitude'); % Plot the modulated signal subplot(2,1,2); samples = 1:10000; plot(samples / 10000, modSignal(1:10000)); title('MSK modulated signal'); xlabel('Time (s)'); ylabel('Amplitude'); % Perform MSK demodulation demodBits = demodMSK(modSignal, 10, 10, 10000); % Function to perform MSK modulation function [signal, timeVec] = modulateMSK(bits, carrierFreq, baudRate, sampleFreq) % Converts a binary bit sequence into an MSK-modulated signal % Inputs: % bits - Binary input sequence % carrierFreq - Carri...
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BER vs SNR for M-ary QAM, M-ary PSK, QPSK, BPSK, ...

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Constellation Diagrams of ASK, PSK, and FSK

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Comparisons among ASK, PSK, and FSK | And the definitions of each

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MATLAB Code for QAM (Quadrature Amplitude Modulation)

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What is the Step Size in FFT?

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Theoretical and simulated BER vs. SNR for ASK, FSK, and PSK

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