Journal ArticleDOI
Hybrid DS/SFH spread-spectrum multiple access with predetection diversity and coding for indoor radio
J. Wang,Marc Moeneclaey +1 more
Reads0
Chats0
TLDR
The authors derive close upper and lower bounds on the average bit error probability for hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access systems with noncoherent DPSK demodulation using predetection diversity in conjunction with interleaved channel coding.Abstract:
The authors derive close upper and lower bounds on the average bit error probability for hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access (DS/SFH-SSMA) systems with noncoherent DPSK demodulation, using predetection diversity (selection combining and equal gain combining) in conjunction with interleaved channel coding (Hammingread more
Citations
More filters
Journal ArticleDOI
Multitone spread spectrum multiple access communications system in a multipath Rician fading channel
TL;DR: A new multiple access communications system based on the combination of multitone transmission and direct sequence spectrum spreading (DS/SS) is proposed because the associated larger symbol duration is favorable to combat the effects of multipath propagation.
Journal ArticleDOI
Hybrid DS/SFH-SSMA with predetection diversity and coding over indoor radio multipath Rician-fading channels
J. Wang,Marc Moeneclaey +1 more
TL;DR: The authors investigate the bit-error-rate (BER) performance of hybrid direct-sequence/slow-frequency-hopped spread-spectrum multiple-access systems operating over a multipath Rician-fading channel and consider both phase-shift-keying modulation with coherent demodulation and differential phase- shifts with noncoherent demodulations.
Journal ArticleDOI
Multiple hops/symbol FFH-SSMA with MFSK modulation and Reed-Solomon coding for indoor radio
J. Wang,Marc Moeneclaey +1 more
TL;DR: A multiple-hopes-per-symbol fast-frequency-hopped spread-spectrum multiple-access (FFH-SSMA) system for indoor radio communication is treated and how the performance is influenced by various parameters, such as the number of hops per symbol and the size of the symbol alphabet, is investigated.
Proceedings ArticleDOI
An improved dynamic clustering algorithm for multi-user distributed antenna system
Jingxin Liu,Dongming Wang +1 more
TL;DR: A novel dynamic clustering algorithm for MU-DAS is presented that yields significant capacity gains when compared with some proposed clustering algorithms, and also the implementation complexity of the proposed algorithm remains very low.
Journal ArticleDOI
Overlapping M-ary frequency shift keying spread-spectrum multiple-access systems using random signal sequences
Lie-Liang Yang,L. Hanzo +1 more
TL;DR: In this paper, the authors considered a multiple-access spread-spectrum communication system using binary frequency shift keying (BFSK) or M-ary frequency-shift keying and non-coherent demodulation, where the frequency band of a spread FSK tone may be fully or partially overlapping with other spread signals.
References
More filters
Journal ArticleDOI
A Statistical Model for Indoor Multipath Propagation
TL;DR: The results of indoor multipath propagation measurements using 10 ns, 1.5 GHz, radarlike pulses are presented for a medium-size office building, and a simple statistical multipath model of the indoor radio channel appears to be extendable to other buildings.
Journal ArticleDOI
Introduction to spread-spectrum antimultipath techniques and their application to urban digital radio
TL;DR: Results of analyses and simulations of various candidate receivers indicated by the theory, as they perform through urban/suburban multipath show that megabit-per-second rates through urban multipath are quite feasible.
Journal ArticleDOI
UHF fading in factories
TL;DR: The extensive empirical data indicate that path loss is dependent upon local surroundings and is log-normally distributed, temporal fading is Rician, and small-scale signal fluctuations due to receiver motion are primarily Rayleigh, although Rician and log-normal distributions fit some of the data.
Journal ArticleDOI
Direct-Sequence Spread Spectrum with DPSK Modulation and Diversity for Indoor Wireless Communications
TL;DR: In this paper, the performance of a single link between a user and its receiver in the central station, and consider two types of diversity, selection diversity and predetection combining to exploit the multipath channel, is investigated.
Related Papers (5)
Downlink transmission of broadband OFCDM Systems-part I: hybrid detection
Performance of wideband CDMA systems with complex spreading and imperfect channel estimation
Jiangzhou Wang,Jun Chen +1 more