Software platforms of 5G

Figure 9: Block Diagram and Code functionalities of WLAN

Transmitter: A transmitter side is an equipment or tool used to generate and transmit electromagnetic waves carrying messages or signals especially those of like radio signals. Here we would be using transmitter as an input function used to generate a test waveform.

Channel: A channel can be defined as the bandwidth used to allocate the frequencies used for radio and television transmission. A fading channel can be referred to a communication channel that experiences fading. In wireless systems, fading can be due to a multipath propagation and due to shadowing from obstacles affecting the wave propagation, referred to as shadow fading.

Receiver: Similarly, to the transmitter side which is used to transmit the signals, there is a receiver side which is there to receive those signals. We have two operations at the receiver side they are synchronization and OFDM demodulation and channel estimation and equalization.

Synchronization: In wireless communication, the receiver side should determine the time instants for the incoming signal which needs to be sampled (timing synchronization). For bandpass communications, the receiver needs to take the frequency and the phase of its local carrier oscillator with those of the received signal which will be termed as carrier synchronization.

Orthogonal Frequency-division Multiplexing(OFDM) demodulation: The term is used as a digital multi-carrier modulation method. It can be defined as a large number of closely spaced orthogonal subcarrier signals are used to carry data on several parallel data streams or channels. OFDM can be demodulated using FFTs (Fast Fourier Transform). But if in case you have a very few number of carriers, you might be able to use a small number of orthogonal quadrature demodulators.

Channel estimation: It can be defined as the User Defined pilot-averaging method performs twodimensional interpolation to estimate the channel response between the available pilot symbols. An interpolation window is used to specify which data is used to perform the interpolation.

Equalization: It is a process of adjusting the balance between the frequency components within an electronic signal. The most common equalization can be seen in the sound recordings and reproduction where there are many applications in signal processing tools and telecommunications.

WLAN Transceiver: