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| 11. |
Optimal channel assignment in a packet-switching network with a conflict-free multiple-access scheme |
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IEE Proceedings F (Communications, Radar and Signal Processing),
Volume 132,
Issue 6,
1985,
Page 510-510
T.Ohno,
T.Shioyama,
H.Mine,
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PDF (128KB)
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DOI:10.1049/ip-f-1.1985.0096
出版商:IEE
年代:1985
数据来源: IET
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| 12. |
Analysis of a multilink system in the presence of noise, cochannel interference and some hardware imperfections |
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IEE Proceedings F (Communications, Radar and Signal Processing),
Volume 132,
Issue 6,
1985,
Page 511-516
G.Lukatela,
I.M.Kostić,
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PDF (642KB)
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摘要:
The paper presents a further development of the theoretical analysis that has been devoted to the terrestrial or satellite system with Gaussian noise and one cochannel intereference per link. The specific aims of the paper are to simplify the performance analysis of the multilink system by introducing an estimate on the upper and lower bound of the symbol error rate, and to present in analytical form the impact of some imperfections (noise of preamplifier, internal interference of cochannel type, internal noise, jitter produced by the first and second local oscaillators) that exist in each repeater as well as in the receiver of anm-ary CPSK or DCPSK system. It is assumed that the repeater output amplifier is a bandpass hard-limiter type (the BPHL type), and that noise and interference act independently on each link of the system.
DOI:10.1049/ip-f-1.1985.0097
出版商:IEE
年代:1985
数据来源: IET
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| 13. |
Cellular mobile packet radio using multiple-channel CSMA |
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IEE Proceedings F (Communications, Radar and Signal Processing),
Volume 132,
Issue 6,
1985,
Page 517-526
N.D.Wilson,
S.S.Rappaport,
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PDF (1566KB)
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摘要:
One way to increase frequency spectrum utilisation in a mobile communication system is to divide the geographical region spatially into a number of cells, each of which contains a base station. Each base station is assigned a set of channels, and the users in the neighbourhood of a base station can transmit their messages to the base station. Several protocols governing the access to the base station channels are available. The paper considers multichannel CSMA schemes embedded in a spatially celluar communication environment. Several alternative ways of organising the system resources, layout and protocol are considered. The complexity of the system is progressively increased, culminating in the general case: each base station is assigned a set ofCachannels and users access any one of theknearest base stations with multichannel CSMA protocol. The performance characteristics of the system—normalised delay against system bandwidth utilisation—are given in terms of the system parameters. The several configurations considered are compared based on the delay, band-width utilisation and interference rejection characteristics.
DOI:10.1049/ip-f-1.1985.0098
出版商:IEE
年代:1985
数据来源: IET
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