Filters








2,659 Hits in 5.3 sec

A simulation comparison of multiuser receivers for cellular CDMA

R.M. Buehrer, N.S. Correal-Mendoza, B.D. Woerner
2000 IEEE Transactions on Vehicular Technology  
Unlike the conventional receiver which treats multiple access interference (MAI) as if it were AWGN, multiuser receivers treat MAI as additional information to aid in detection.  ...  successive interference cancellation receiver, and the decorrelating decision feedback receiver.  ...  Multistage Parallel Interference Cancellation Multistage receivers are receivers which have multiple stages of interference estimation and cancellation.  ... 
doi:10.1109/25.875213 fatcat:omrwid2wy5fv3bgxixudemnkmu

A DSP-based DS-CDMA multiuser receiver employing partial parallel interference cancellation

N.S. Correal, R.M. Buehrer, B.D. Woerner
1999 IEEE Journal on Selected Areas in Communications  
Due to their lower complexity, subtractive interference cancellation approaches are attractive for the practical implementation of multiuser detection.  ...  In a parallel interference cancellation receiver, it is practical to use the soft outputs of a matched filter bank for amplitude estimation.  ...  The approach of the noncoherent implementation is similar to that of the coherent Fig. 9 . Block diagram of the differentially coherent parallel partial interference cancellation receiver. approach.  ... 
doi:10.1109/49.761040 fatcat:hgvvtrbowvgwzkwkos3qlle3by

Multiuser Detection in CDMA Systems [chapter]

2006 Wireless Communications over MIMO Channels  
Present day direct sequence code division multiple access (DS/CDMA) systems treat each user separately as a signal, with all ofthe other users representing interference or noise.  ...  Potentially significant capacity improvements can be achieved ifthe negative effect that each user has on the others is cancelled.  ...  Figure 3 . 3 - 33 Noncoherent receiver with interference cancellation and mnltipath combining.  ... 
doi:10.1002/0470034602.ch5 fatcat:rpfpngs5ejd35eefltoppcukgq

Noncoherent ultra-wideband systems

Klaus Witrisal, Geert Leus, Gerard Janssen, Marco Pausini, Florian Troesch, Thomas Zasowski, Jac Romme
2009 IEEE Signal Processing Magazine  
His research interests are in wireless communication, especially narrowband multiuser detection, digital modulation techniques, channel modeling, diversity techniques, and ultra-wideband communications  ...  Subtracting two consecutive samples for BPPM detection implies that the interference is cancelled, if both samples are taken well within the coherence time of the NBI signal; that is if w a 1t i, n , D  ...  The scrambling code helps with multiple access interference (MAI) suppression (with coherent receivers) and spectral smoothing.  ... 
doi:10.1109/msp.2009.932617 fatcat:fmukf6ij3ffm5ppi4cg7kxqqfa

Symbiotic Radio: Cognitive Backscattering Communications for Future Wireless Networks

Ying-Chang Liang, Qianqian Zhang, Erik G. Larsson, Geoffrey Ye Li
2020 IEEE Transactions on Cognitive Communications and Networking  
communications, thus the secondary system shares not only the radio spectrum, but also the power, and infrastructure with the primary system.  ...  In particular, the secondary transmitter (STx) in SR transmits messages to the secondary receiver (SRx) over the RF signals originating from the primary transmitter (PTx) based on cognitive backscattering  ...  Then the receiver subtracts the direct link signal with the estimated s k (n) and detects the secondary symbol c(n) by the MRC estimator.  ... 
doi:10.1109/tccn.2020.3023139 fatcat:yk2p5zguwrb5hkmk4wgwywielq

Carrier-assisted differential detection

William Shieh, Chuanbowen Sun, Honglin Ji
2020 Light: Science & Applications  
To date, various direct detection schemes capable of optical field recovery have been proposed, including Kramers-Kronig (KK) and signal-signal beat interference (SSBI) iterative cancellation (IC) receivers  ...  Our proposed receiver architecture opens a new class of direct detection schemes that are suitable for photonic integration analogous to homodyne receivers in coherent detection.  ...  Received: 5 November 2019 Revised: 18 January 2020 Accepted: 20 January 2020  ... 
doi:10.1038/s41377-020-0253-8 pmid:32047627 pmcid:PMC7010685 fatcat:5nstp5sdfzce3bnb4mjnc577w4

Symbiotic Radio: Cognitive Backscattering Communications for Future Wireless Networks [article]

Ying-Chang Liang, Qianqian Zhang, Erik G. Larsson, Geoffrey Ye Li
2020 arXiv   pre-print
communications, thus the secondary system shares not only the radio spectrum, but also the power, and infrastructure with the primary system.  ...  In particular, the secondary transmitter (STx) in SR transmits messages to the secondary receiver (SRx) over the RF signals originating from the primary transmitter (PTx) based on cognitive backscattering  ...  Then the receiver subtracts the direct link signal with the estimated s k (n) and detects the secondary symbol c(n) by the MRC estimator.  ... 
arXiv:2007.01506v1 fatcat:cgdg7gsnezapdgu55lricooake

Channel Equalization for Single Carrier MIMO Underwater Acoustic Communications

Jun Tao, Yahong Rosa Zheng, Chengshan Xiao, T. C. Yang, Wen-Bin Yang
2010 EURASIP Journal on Advances in Signal Processing  
In such cases, the equalized symbols produced by conventional equalizer aiming for STI cancelation suffer phase rotation and thus cannot be reliably detected.  ...  Multiple-input multiple-output (MIMO) underwater acoustic (UWA) channels introduce both space-time interference (STI) and time-varying phase distortion for transmitted signals.  ...  The detected symbols together with the equalized symbols were also used to construct the interference of the detected stream, which was subtracted out of the received signal for detecting the next stream  ... 
doi:10.1155/2010/281769 fatcat:n7kdy7qvzzdqte5ryvsxq546qe

Interference rejection in digital wireless communications

J.D. Laster, J.H. Reed
1997 IEEE Signal Processing Magazine  
reception, namely a coherent decorrelating and a differentially coherent decorrelating detector.  ...  to operate in a coherent detection mode).  ... 
doi:10.1109/79.587051 fatcat:sx5pmfgocrgjfoealxa7jg4wse

Interference alignment using shadow channel

Bo Chen, Vivek Yenamandra, Kannan Srinivasan
2015 2015 IEEE Conference on Computer Communications (INFOCOM)  
We achieve throughput gains of upto 1.44X over TDMA systems using this interference alignment technique and upto 1.61X when this technique is coupled with interference cancellation. 2 Precoding vector  ...  The time variance of a channel is exploited in interference alignment techniques.  ...  AP2 subtracts x 1 through interference cancellation. As a result, AP2 decodes messages x 2 and y.  ... 
doi:10.1109/infocom.2015.7218598 dblp:conf/infocom/ChenYS15 fatcat:i6gs7lentrcw5j5zkiq62uxiw4

DMD-Unmanaged Long-Haul SDM Transmission Over 2500-km 12-Core × 3-Mode MC-FMF and 6300-km 3-Mode FMF Employing Intermodal Interference Canceling Technique

Kohki Shibahara, Takayuki Mizuno, Doohwan Lee, Yutaka Miyamoto, Hirotaka Ono, Kazuhide Nakajima, Yoshimichi Amma, Katsuhiro Takenaga, Kunimasa Saitoh
2019 Journal of Lightwave Technology  
Layered MIMO signal processing comprising multiple stages performing successive signal detection and intermodal interference canceling mitigated MDL impact with more than 2-dB Q-factor improvement.  ...  Index Terms-Differential mode delay (DMD), mode dependent loss (MDL), MIMO equalization, space division multiplexing (SDM), successive interference cancellation (SIC).  ...  Takayuki Mizuno (M'04) received the B.E. degree in applied physics, the M.E. degree in crystalline materials science, and the Dr.  ... 
doi:10.1109/jlt.2018.2877213 fatcat:oi7pzo4ycfa4dnnhaqjq3fdo3i

A sliding window decorrelating receiver for multiuser DS-CDMA mobile radio networks

S.S.H. Wijayasuriya, G.H. Norton, J.P. McGeehan
1996 IEEE Transactions on Vehicular Technology  
The SLWA architecture is extended to incorporate differentially coherent multipath (RAKE) diversity combining techniques and hence achieves simultaneous rejection of multiuser and multipath interference  ...  paper we detail the development of a near-far (NF) resistant sliding window decorrelating algorithm (SLWA) that overcomes the near-far problem (NFP) pertaining to the conventional linear correlation receiver  ...  Differential Detection in AWGN Let the statistics obtained over adjacent symbol intervals be X and Y .  ... 
doi:10.1109/25.533766 fatcat:pfgsqcldb5eu3knceqaw4s3twy

Jamming Resilient Communication Using MIMO Interference Cancellation

Qiben Yan, Huacheng Zeng, Tingting Jiang, Ming Li, Wenjing Lou, Y. Thomas Hou
2016 IEEE Transactions on Information Forensics and Security  
Index Terms-Reactive jamming, MIMO, software defined radio, interference cancellation, transmit precoding.  ...  In particular, MIMO interference cancellation treats jamming signals as noise and strategically cancels them out, while transmit precoding adjusts the signal directions to optimize the decoding performance  ...  More importantly, recent advance in MIMO interference cancellation (IC) technique [10] - [12] has greatly enhanced MIMO communication capability under multiple concurrent transmissions.  ... 
doi:10.1109/tifs.2016.2535906 fatcat:ptb2se7q3fbxtlbdgq35m47sdi

Power-Ordered NOMA with Massive MIMO for 5G Systems

Mário Marques da Silva, Rui Dinis
2021 Applied Sciences  
technique, associated with massive Multiple-Input Multiple-Output (MIMO), evidencing its added value in terms of spectral efficiency of such combined scheme.  ...  Moreover, this article shows that the Maximum Ratio Combiner (MRC) receiver is very well fitted to be combined with NOMA and m-MIMO, as it achieves a good performance while reducing the receiver complexity  ...  • In terms of complexity, while conventional NOMA has a single receiver with the SIC to cancel the higher power interfering users, cooperative NOMA must incorporate a similar receiver added with multiple  ... 
doi:10.3390/app11083541 fatcat:tjvhx7p4lfgopml5fzent3qqgy

Efficient Delay Tracking Methods with Sidelobes Cancellation for BOC-Modulated Signals

Adina Burian, ElenaSimona Lohan, MarkkuKalevi Renfors
2007 EURASIP Journal on Wireless Communications and Networking  
Five sidelobe cancellation methods (SCM) are proposed and studied: SCM with interference cancellation (IC), SCM with narrow correlator, SCM with high-resolution correlator (HRC), SCM with differential  ...  In this paper, sidelobe cancellation techniques are applied with various tracking structures in order to remove or diminish the side peaks, while keeping a sharp and narrow main lobe, thus allowing a better  ...  SCM with interference cancellation (IC) Combining the multipath eliminating DLL concept with the SCM method, we obtain an improved SCM technique with multipath interference cancellation (SCM with IC).  ... 
doi:10.1155/2007/72626 fatcat:gfm2oultjzhijeh6pn7tfe5bmu
« Previous Showing results 1 — 15 out of 2,659 results