Proceedings ArticleDOI
An integrated voice/data system for mobile indoor radio networks using multiple transmission rate
K. Zhang,Kaveh Pahlavan +1 more
- pp 1366-1370
TLDR
A centralized, integrated voice/data radio network for indoor fading multipath radio channels is proposed and analyzed and the results are compared with those of Monte Carlo computer simulations.Abstract:
A centralized, integrated voice/data radio network for indoor fading multipath radio channels is proposed and analyzed. It can operate as a stand-alone system or as a cell in a cellular network. The packets of voice and data in the uplink are integrated through a movable-boundary framed-polling protocol to optimize the throughput of the data traffic for a given number of voice terminals. The down link is a simple TDM (time division multiplexing) system. The system dynamically switches between two transmission rates and uses multiple antennas to maximize the throughput in the fading multipath indoor channel. Using three different techniques, the throughput and delay characteristic of the system are analyzed. A simple equation is given to provide an approximate relation between the number of voice users, the data traffic with less than 10-ms delay, and the average transmission rate of the system. The results are compared with those of Monte Carlo computer simulations. >read more
Citations
More filters
Patent
Method and apparatus for high-rate packet data transmission
Roberto Padovani,Bender Paul E,Peter J. Black,Matthew S. Grob,Hinderling Jurg K,Nagabhushana T. Sindhushayana,Wheatley Charles E +6 more
TL;DR: In this article, the data packets can be transmitted out of sequence by the use of sequence number to identify each data unit within the data packet, which results in retransmission of the received in error.
Patent
Hierarchical communication system providing intelligent data, program and processing migration
Ronald L. Mahany,Guy J. West,Alan G. Bunte,Arvin D. Danielson,Michael D. Morris,Robert C. Meier +5 more
TL;DR: In this paper, a hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices.
Patent
System and method for controlling communication in a multi-network environment
Ronald L. Mahany,Guy J. West,Alan G. Bunte,Arvin D. Danielson,Michael D. Morris,Robert C. Meier +5 more
TL;DR: In this article, a hierarchical communication system, arranged in a spanning tree configuration, is described in which wired and wireless communication networks exhibiting substantially different characteristics are employed in an overall scheme to link portable or mobile computing devices.
Patent
Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
Holtzman Jack M,Tao Chen +1 more
TL;DR: In this article, a method and apparatus for selecting a favored transmission slot for communicating non-voice data in conjunction with a voice-data communication is presented, reflecting a favored power level and transmission rate for transmitting the nonvoice data on a supplemental channel, is selected based upon the transmission power levels for voice data transmitted by a base station to a remote station.
Patent
Transmission format in packet based communications
TL;DR: In this paper, the transmission frames have equal length or duration and they have a common format, and each transmission frame includes a frame marker field, a signaling field, and a communication field.
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
A model for generating on-off speech patterns in two-way conversation
TL;DR: A model that generates on-off speech patterns representative of those in experimental two-way telephone conversations that yields good fits to all events except “speech before interruption;” when an interruption occurs, a model speaker tends to interrupt the other's talkspurt later than a real speaker does.
Journal ArticleDOI
Time delay spread and signal level measurements of 850 MHz radio waves in building environments
TL;DR: In this paper, the time delay spread and signal level measurements of 850 MHz radio signals were made over inside-to-outside radio paths at two residential locations and an office building.
Journal ArticleDOI
Fractional Speech Loss and Talker Activity Model for TASI and for Packet-Switched Speech
TL;DR: A simple Markov birth-death model is presented for the random process a(t) representing the number of talkers issuing talkspurts at a given time, and it is shown to hold independently of the probability density function of talkspurt duration.
Journal ArticleDOI
Channel modeling and adaptive equalization of indoor radio channels
T.A. Sexton,Kaveh Pahlavan +1 more
TL;DR: The authors analyze the benefits of using a decision feedback equalizer (DFE) in the indoor radio environment and examine the results of performance predictions for different channel modelings.