Limiting Behavior of ZF/MMSE Linear Equalizers in Wideband Channels with Frequency Selective Fading


This letter establishes the near optimality of the linear equalizers (LEs) in multiple antenna systems with frequency selective fading. Initial, we show that a zero-forcing (ZF) LE employing N_r receiver antennas (where N_r>one), achieves a mounted signal-to-noise-power-ratio (SNR) of fracN_r-1N_0 in an i.i.d. Rayleigh fading channel with infinite number of taps. The LE sacrifices one degree-of-freedom (DOF) for mitigating the multi-path fading channel and leaves remaining N_r-1 DOF for array gain. The most performance loss with respect to the matched filter certain (MFB) is shown to be 10log(fracN_r-1N_r) which becomes little in systems with massive antenna arrays. Next, simulation is employed to match the performance of minimum-mean-square-error estimation (MMSE) and ZF receivers. It's shown that the MMSE based mostly LE provides a significant advantage over ZF LE solely for singleantenna systems and therefore the performance distinction between the 2 ways becomes arbitrarily tiny with an increase in the number of receiver antennas.

Did you like this research project?

To get this research project Guidelines, Training and Code... Click Here

PROJECT TITLE :Constant Resonant Current Limiting Strategy for LLC Converter Without Current SensingABSTRACT:There are great current shocks in LLC resonant converter during startup and over load condition. Standard open loop current
PROJECT TITLE :Simple DQPSK Signal Regenerator Using Electrical Limiting AmplifiersABSTRACT:A easy optoelectronic regenerator for differential quadrature part-shift keying (QPSK) signals is demonstrated. The regenerator consists
PROJECT TITLE :A Novel Model of HVDC Hybrid-Type Superconducting Circuit Breaker and Its Performance Analysis for Limiting and Breaking DC Fault CurrentsABSTRACT:The key obstacle in integrating high-voltage direct current (HVDC)
PROJECT TITLE :Virtual Impedance Current Limiting for Inverters in Microgrids With Synchronous GeneratorsABSTRACT:This paper focuses on current limiting for voltage-controlled inverters throughout overloads caused by poor transient
PROJECT TITLE :Design of Compact, Low-Profile, Wideband, Dual-Frequency Patch Antennas Based on Complementary Co-Directional SRRsABSTRACT:A ancient microstrip antenna is capable of exhibiting smart dual-band operation via slotting

Ready to Complete Your Academic MTech Project Work In Affordable Price ?

Project Enquiry