Patent
Hybrid intra-cell TDMA/inter-cell CDMA for wireless networks
Michael L. Honig,Upamanyu Madhow +1 more
TLDR
In this paper, a hybrid system combines the high intra-cell capacity of TDMA with the inter-cell and multipath interference rejection capabilities of CDMA, where TDMA is used inside each cell and CDMA signals, having low cross-correlations, are assigned to adjacent cells.Abstract:
In a cellular network, a multiple-access methodology and concomitant circuitry in which TDMA is used inside each cell and CDMA signals, having pulse shapes with low cross-correlations, are assigned to adjacent cells. For example, these pulses could be Direct-Sequence Spread-Spectrum pulses. Such a hybrid system combines the high intra-cell capacity of TDMA with the inter-cell and multipath interference rejection capabilities of CDMA.read more
Citations
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Patent
Hierarchical Data Collection Network Supporting Packetized Voice Communications Among Wireless Terminals and Telephones
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Patent
Multi-band, multi-mode spread-spectrum communication system
TL;DR: In this article, a technique for spread-spectrum communication which uses more than one mode and multiple frequency bands is presented. But the frequency band onto which spread-Spectrum signals are encoded may be changed upon a change in environment or other control trigger, such as establishment or de-establishment of communication with a private access network.
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Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant
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Coexisting communication systems
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TL;DR: In this paper, a synchronous co-division multiple access (SCDMA) protocol is proposed to transmit multiple channels of digital data over a shared transmission media such as a cable television system coaxial cable, a fiber optic or copper conductor telephone link, terrestial microwave, satellite link, local or wide area network, wireless including cellur network or some combination of these media using suitable interface circuitry.
References
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Patent
Method and apparatus for handing-over a radio connection from one radio cell to another radio cell of a digital radio transmission system
TL;DR: In this paper, the reception quality of the co-channel message transmission channels of remote base stations is additionally measured in the mobile station during the existence of a radio connection to a near base station.
Patent
CDMA/TDMA spread-spectrum communications system and method
TL;DR: In this article, a spread-spectrum transmitter and receiver using CDMA with time division multiple access technology for spread spectrum communications is presented. But the authors do not consider the use of a demultiplexer for decoding the time-division signals.
Patent
Multiple access telephone extension systems and methods.
TL;DR: In this article, a method and system for conducting multiple access simultaneous telephone communications in full duplex either over the power lines of a building or using RF transmission is presented, which employs a combination of multiple access techniques selected from among the following: time division, code division, and frequency division.
Patent
Method of and arrangement for synchronizing the receiver arrangements in a digital multiplex transmission system
TL;DR: In this article, the synchronizing symbols used in all channels are the same, and are spaced at the same time intervals in each channel, therefore, they are received with significantly higher energy than the data symbols, permitting the multi-path profile to be measured and providing reliable synchronization.
Patent
Interference suppression in cdma systems
Michael L. Honig,Upamanyu Madhow +1 more
TL;DR: In this paper, a bank of cyclically shifted filters (502) determined with reference to the conventional matched filter (401) for CDMA is used to demodulate the channel signal.