Cyclic Prefix (CP)
Effect of Cyclic Prefix on OFDM Signal
... of cyclic prefix (CP), is inserted between OFDM symbols to eliminate both the inter- symbol interference (ISI) and the inter-channel interference ...of cyclic prefix on data rate using OFDM ...
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Effect of cyclic prefix in BER improvement in MIMO-OFDM system
... is that since low-rate modulations are less sensitive to multipath, the better way is to send a number of low rate streams in parallel than sending one high rate waveform. It divides the frequency spectrum into sub-bands ...
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Scalable Cyclic Prefix Based Adaptive Roll off Factor for Phase Offset Reduction in LTE
... with Cyclic Prefix (CP) [9] also demand some key ...Adaptive Cyclic Prefix (ACP) based ISI removal has been proposed which in fact works well in WiMAX scenarios ...
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Iterative Frequency-Domain Channel Estimation and Equalization for Ultra-Wideband Systems with Short Cyclic Prefix
... scenarios, respectively. In each plot, simulations are pre- sented for all CM1–CM4 UWB channel models so as com- parisons are possible for the performance of the proposed receiver for different channels. In addition, the ...
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Cyclic Prefix Based Channel Estimation of Single Carrier Frequency Domain Equalization
... carrier cyclic prefixed (SC-CP) with frequency domain equalizer (FDE) is favourable and robust channel ...i.e. cyclic prefix itself and without adding any training ...
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Interference Cancellation Schemes for Single Carrier Block Transmission with Insufficient Cyclic Prefix
... with cyclic prefix (CP), including or- thogonal frequency division multiplexing (OFDM) [1, 2] and single-carrier block transmission with the CP (SC-CP) [3, 4], has been drawing much attention as a promising ...
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On Ultra Extended Cyclic Prefix in Orthogonal Frequency Division Multiplexing (OFDM) Systems: The Case of LTE Downlink
... termed Resource Grid (RG), and the smallest unit, one symbol length on one sub-carrier, is called a Resource Element (RE). In case of multi-antenna transmission, one RG is defined per antenna port. Allocation of RBs to ...
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Effect of Variable Cyclic Prefix Length on OFDM System Performance over Different Wireless Channel Models
... Abstract A Cyclic Prefix (CP) is a significant feature of an OFDM waveform. It is used to completely eliminate both Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) as long as the CP ...
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ISI Reduction in MIMO-OFDM with Insufficient Cyclic Prefix- A Survey
... of cyclic prefix in OFDM system. If the cyclic prefix is greater than the channel length then the effect of inter symbol interference can be ...insufficient cyclic prefix is ...
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Impact of Adaptive Downlink Uplink Channel Split Ratio and Cyclic Prefix on WiMAX Network
... WiMax provides high-speed data access to the Internet where the transmission control protocol (TCP) is the core transport protocol. In particular, we investigate the dependence of the aggregate throughput and goodput of ...
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Space Time Block Code in MIMO OFDM Cyclic Prefix Cancellation Schemes for Mitigating ICI L Rajeshwar Reddy & Belcy D Mathews
... Different methodologies tend to abuse some other repetition in the flag structure. In [3][4], preparing images are utilized to evaluate the recurrence counterbalance, in [5] the creators propose to utilize the ...
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OFDM system cyclic prefix characteristic analysis for WIMAX Technology
... added cyclic prefix is removed and original signal is extracted for further processing of ...a cyclic time domain signal into its equivalent frequency ...
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Frequency Domain Interference Cancellation for Single Carrier Cyclic Prefix CDMA System
... Abstract—In this paper, we propose a low complexity receiver structure for Single-input Multiple-output (SIMO) downlink cyclic prefixCDMA (CP-CDMA) systems. It employs an interference cancellation scheme to ...
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Antenna Subset Selection for Cyclic Prefix Assisted MIMO Wireless Communications over Frequency Selective Channels
... A BER performance comparision of the di ff erent antenna selection methods employing both schemes with linear equalizers is done for uncoded and coded transmissions over frequency selecti[r] ...
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Performance Analysis of MSE-OFDM System
... single cyclic prefix is used ...single cyclic prefix is used in one ...by cyclic prefix in each symbol and therefore improves the bandwidth ...
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Comparisons of Short Prefix Based Channel Estimation in Single Carrier Communication Systems
... of cyclic prefix (CP), the tradi- tional time domain LS estimation can be improved to be used in the condition that the length of pilot sequence is smaller than data sequence but still larger than ...
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Reed-Solomon Coded OFDM with Unique Word as Guard Interval
... ABSTRACT: This paper gives an idea for a new transmit signal structure for OFDM(Orthogonal Frequency Division Multiplexing).To avoid the interference between to signal we always require a guard band interval using ...
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BER IMPROVEMENT IN WIMAX SYSTEMS: A SURVEY1Sushant Nerkar, 2Ravi Kateeyare
... In [3] Zeyad Moh. Elkwash et.al implemented a WiMAX system with the help of MATLAB tool. The results of simulation are useful to evaluate the BER of different modulation techniques (BPSK, 4QAM, 16QAM, and 64QAM) by the ...
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STBC-OFDM using Compressive Sensing Theory for Wireless Systems
... Time Domain Synchronous OFDM (STBC-OFDM) has higher spectral efficiency and faster synchronization than standard cyclic prefix OFDM (CP-OFDM). The performance parameters is given of CP-OFDM. Compressive ...
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Bit Error Rate of Orthogonal Frequency Division Multipexing System
... In OFDM the spectra of subcarriers are overlapped for band width efficiency and the multiple orthogonal signals can be established by simplify the single carrier Nyquist criterion into the multicarrier criterion. ...
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