uplink multiple access scheme
Efficient Mobile Uplink LTE System Using Scfdma and Biorthogonal Wavelets
... Division Multiple Access (SC-FDMA) is an attractive technology for uplink broadband wireless communications, because it does not have the problems of Orthogonal Frequency Division Multiple ...
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Energy saving centric uplink scheduling scheme for broadband wireless access networks
... on-off scheme was proposed to solve the energy-wasting problem of no traffic transmission during a fixed listen period, which adjusts the length of sleep and listen periods according to the traffic ...of ...
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Generalised grouped minimum mean-squared errorbased multi-stage interference cancellation scheme for orthogonal frequency division multiple access uplink systems with carrier frequency offsets
... physical-layer multiple-access technologies in the recent wireless metropolitan area network (MAN) standard IEEE ...OFDMA uplink is particularly difficult mainly due to two ...in uplink OFDMA, ...
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Uplink Contention Based SCMA for 5G Radio Access
... code multiple access (SCMA) is introduced in [3] as a new multiple access ...non-orthogonal access mode allowing overloading of the system with a large number of SCMA layers to enable ...
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Bandwidth Guaranteed NVS Using Multiple Uplink Communication
... division multiple access (CDMA) techniques by use of the multi hop [5] ...the scheme throughput, along with formula in the mobile system could be better with the usage of the multi hop relaying To ...
5
A Comprehensive Review of Modulation Techniques used in Long Term Evolution
... radio access technology assuming that all services would be ...radio access technology. radio spectrum access is based on the Orthogonal Frequency Division multiplexing (OFDm) ...Division ...
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Multicarrier DS CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
... Multiuser detection (MUD) is a highly efficient detection technique, which is capable of attain- ing near-single-user performance, while support- ing a multiplicity of users and hence increasing the user capacity of ...
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Uplink performance enhancement for LTE licensed assisted access to unlicensed spectrum
... For a UE scheduled for data transmission (say, UE 1), the transmission attempt could be a failure if the chan- nel is sensed to be occupied by some WiFi user. How- ever, the interference from this WiFi user to another UE ...
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A Novel Hybrid Multiple Access Scheme in Downlink for 4G Wireless Communications
... DS-CDMA scheme. In TD-MC- CDMA scheme also, the chips of spread data symbol are transmitted in frequency direction over several parallel subchannels or in time direction over several multicarrier ...the ...
10
Vol 9, No 3 (2017)
... Non-orthogonal multiple Access (NOMA) is a potential 5G era multiple-access scheme that is proposed for the future mobile Internet and IoT applications which will require enormous ...
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A reduced complexity scheme for carrier frequency synchronization in uplink 802.16e OFDMA
... (ICI), multiple access interference (MAI), sig- nal attenuation, and a constant increment in the phase of the ...effects, uplink signals arriving at the BS may be affected by some residual CFOs, which ...
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Orthogonal Frequency Division Multiplexing (OFDM) based Uplink Multiple Access Method Over AWGN and Fading Channels
... In OFDM, the user close to base station will be assigned a large number of channels. These users use higher modulation schemes to give high throughput. If the user moves away from the base station the number of channels ...
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4G UPLINK & OTHER DEVELOPMENTS IN INTERLEAVE-DIVISION MULTIPLE-ACCESS (IDMA)
... IDMA is also a promising technique for applications over MIMO channels. Two methods are outlined below for situations with and without channel state information (CSI) at the transmitter, respectively. ...
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A new cross layer scheme that combines grey relational analysis with multiple attributes and knapsack algorithms for WiMAX uplink bandwidth allocation
... Microwave Access (WiMAX) networks, many radio resource management approaches have been present to assign orthogonal frequency division multiplexing access slots for seeking better ...new uplink ...
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Multiple CFOs in OFDM SDMA Uplink: Interference Analysis and Compensation
... division multiple access (SDMA) systems, multiple users are served by a multiantenna base station simultaneously on the same frequency ...the uplink, each user’s signal may be distorted by an ...
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Evaluation of BER in CDMA with Parallel Interference Cancellation
... (PIC) scheme in Code division multiple access with cyclic prefix (CP-CDMA) systems and proposed a new model for cyclic prefix code division multiple access with less complexity and good ...
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Distributed user selection scheme for uplink multiuser MIMO systems in a multicell environment
... Multiuser multiple-input multiple-output (MU-MIMO) is widely accepted as a key technology for enabling high- speed wireless ...the uplink MU-MIMO systems, multiple mobile stations (MSs) are ...
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Fractionally Spread Multicarrier CDMA: A Multiple Access Scheme for Various Wireless Channels
... Our study and results demonstrate that the proposed FS MC- CDMA is capable of efficiently exploiting both the frequency- selective and the time-selective characteristics of the wireless channels encountered for enhancing ...
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Multichannel simultaneous uplink and downlink transmission scheme for flexible duplexing
... Although our main concern is not to distort macro cell UL transmission by means of DL transmission using FD scheme, the other sources of interference can be identi- fied as well. Transmission in PUCCH (within the ...
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Impact of DBTMA (Dual Busy Tone Multiple Access) on AODV (Ad Hoc on Demand Vector) Routing Protocol
... to access the channel with reduced collision ...Channel Access for Ad-hoc Wire- less) and FAMA (Frequency Acquisition Multiple ...multi-channel Access BTMA (Busy-Tone Multiple ...
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