2 research outputs found
A Review- Proposed Bidirectional Relaying for Improved Channel Estimation Error and Co-Channel Interference
Wireless Communication has gained a lot of interest as future generation requires higher data rates and more suitable transmission with adequate quality of service. Wireless communication suffers from various problems like Co-Channel Interference (CCI) and Channel Estimation Error (CEE). Cooperative communication is an efficient technique to deal with these types of problems by offering significant multiplexing and diversity gains without increasing power and bandwidth. Our proposed two way relaying helps to improve the overall system performance in wireless networks. Cooperative communications also deals with the various problems like fading and shadowing. It is further investigated that proposed two way relaying is spectrally efficient technique which provides a way to surmount half duplexing loss in one way relay channel
UNIVERSAL FILTER MULTICARRIER MODULATION SYSTEM WITH VARIED PARAMETERS & IMPACT ON PAPR
One of the main objectives of multicarrier modulation is to provide multiple accesses for wireless communication systems with
higher data rates while having minimum out of band radiation, high spectral efficiency and less complexity. Orthogonal frequency
division multiplexing (OFDM), Universal filter multicarrier (UFMC), Filter bank multicarrier (FBMC) and Generalized frequency
division multiplexing (GFDM) modulation techniques have been developed to support fourth generation and beyond 4G wireless
systems. Demand of high data rate in fourth generation wireless communication systems has been fulfilled by OFDM techniques but
it suffers from the limitation of less spectral efficiency and high PAPR (Peak to average power ratio). Thus to support next
generation wireless systems other waveform models are getting attention. Among the techniques available, UFMC seems to be
attractive due to high spectral efficiency and less complexity. It has not explored much so in this paper, performance of UFMC have
been evaluated with different design factors such as number of sub bands, FFT (Fast Fourier Transform) size, filter characteristics
and modulation under the light of PAPR