Non-coherent multi-user detection based on quantum search

Author

Imre, Sándor ; Balázs, Ferenc

Author_Institution

Dept. of Telecommun., Budapest Univ. of Technol. & Econ., Hungary

Volume

1

fYear

2002

fDate

2002

Firstpage

283

Lastpage

287

Abstract

3G and 4G mobile systems are based on CDMA technology. In order to increase the efficiency of CDMA receivers a large amount of effort is invested to develop suitable multi-user detector techniques. However, at this moment there are only suboptimal solutions available because of the rather high complexity of optimal detectors. One of the possible receiver technologies can be the quantum assisted computing devices which allows high level parallelism in computation. The first commercial devices are estimated by 2004, which meets the advent of 3G and 4G systems. We introduce a novel quantum computation based quantum multi-user detection (QMUD), employing Grover´s (see Bell Labs, April 1999)search algorithm, which provides optimal solution. The proposed algorithm is robust to any kind of noise/suboptimal solutions

Keywords

code division multiple access; land mobile radio; multiuser channels; optical signal detection; quantum computing; search problems; 3G mobile systems; 4G mobile systems; CDMA receivers; CDMA technology; Grover´s search algorithm; commercial devices; noncoherent multiuser detection; optimal detectors; parallel computation; quantum assisted computing devices; quantum multiuser detector; quantum search; search algorithm; Concurrent computing; Detectors; Frequency conversion; Interference; Multiaccess communication; Multiuser detection; Quantum computing; Signal processing algorithms; Wireless LAN; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 2002. ICC 2002. IEEE International Conference on

Conference_Location

New York, NY

Print_ISBN

0-7803-7400-2

Type

conf

DOI

10.1109/ICC.2002.996861

Filename

996861