Contents
What are the equalization techniques?
There are two effective non-linear equalization methods:
- Decision Feedback Equalization (DFE)
- Maximum Likelihood Sequence Estimator (MLSE)
What are two types of techniques used for Equalisation?
The are two types of equalizers: Time domain equalizers and frequency domain equalizers.
What is zero forcing in wireless communication?
Zero-forcing (or null-steering) precoding is a method of spatial signal processing by which a multiple antenna transmitter can null the multiuser interference in a multi-user MIMO wireless communication system.
What is equalization and its types?
The types of commonly used equalizers in digital communications are: Linear Equalizer: It processes the incoming signal with a linear filter. MSME equalizer: It designs the filter to minimize E[|e|2], where e is the error signal that is the filter output minus the transmitted signal.
What is precoding in MIMO?
Precoding for Multi-user MIMO Systems. In multi-user MIMO, a multi-antenna transmitter communicates simultaneously with multiple receivers (each having one or multiple antennas). This is known as space-division multiple access (SDMA).
What is the definition of a Zero Forcing Equalizer?
Zero Forcing Equalizer refers to a form of linear equalization algorithm used in communication systems which applies the inverse of the frequency response of the channel. This form of equalizer was first proposed by Robert Lucky . The Zero-Forcing Equalizer applies the inverse of the channel frequency response to…
How are zero forcing and minimum mean square error used?
Channel equalizers based on minimum mean square error (MMSE) and zero forcing (ZF) criteria have been formulated for a general scalable multiple input multiple output (MIMO) system and implemented for a 2×2 MIMO system with spatial multiplexing (SM) for Rayleigh channel associated with additive white Gaussian noise.
How to explain the behavior of the ZF and MMSE equalizers?
A mathematical framework to explain the behavior of the ZF and MMSE equalizers is formulated. The performance of the equalizers has been validated for a case with one of the communication entities being a spinning aero-vehicle. Performance analysis with respect
What is zero forcing in a noise free case?
The name Zero Forcing corresponds to bringing down the intersymbol interference (ISI) to zero in a noise free case. This will be useful when ISI is significant compared to noise.