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Topic: Frequency channel

	Frequency modulation - Wikipedia, the free encyclopedia
		Frequency modulation (FM) is a form of modulation which represents information as variations in the instantaneous frequency of a carrier wave.
		Problematically, however, frequency drift or lack of selectivity may cause one station or signal to be suddenly overtaken by another on an adjacent channel.
		Note that frequency modulation can be regarded as a special case of phase modulation where the carrier phase modulation is the time integral of the FM modulating signal.
	en.wikipedia.org /wiki/Frequency_modulation (928 words)

	Channel Structures (Site not responding. Last check: 2007-11-06)
		The term "Dm channel" may be used to refer to the control channels used by a mobile station at a given moment, independently of their type.
		One frequency channel of the cell allocation shall be used to carry synchronization information and the BCCH, this shall be known as the BCCH carrier.
		The radio frequency channel sequence is determined by a function that, in a given cell, with a given set of general parameters, with a given timeslot number (TN), a given mobile radio frequency channel allocation (MA), and a given mobile allocation index offset (MAIO), maps the TDMA frame number (FN) to a radio frequency channel.
	home.gci.net /~raff242/channels.html (2957 words)

	Patent 6018543: Noisy channel avoidance method in a digital communication system
		If the frequency channel is determined to be noisy, the receiver is tuned to a new reception frequency channel, the new frequency channel being selectable from a group of permissible frequency channels and responsive to the receiver mode and library period and in a predetermined sequence.
		Upon determining the current frequency channel to be noisy, the library period containing a profile list of time unit offsets, frequency channels, and modulation codes for the current library period is retrieved from memory (block 120).
		After adjusting the RF to the new frequency, RSS samples obtained at the new frequency channel are received and processed in block 30 as previously described to determine whether this particular channel is noisy.
	www.freepatentsonline.com /6018543.html (5706 words)

	Patent 4394775: Frequency division communication system wherein conventional transmitter-transceiver can be used as a ...
		In a single frequency, frequency division, multi-channel cummunication system, a plurality of channels are each allocated a single frequency band, each band being centered on a chosen frequency, the channel center frequencies being spaced apart by a given frequency spacing, for example a frequency spacing of 25 kHz between center frequencies.
		The resultant modulated carrier at the intermediate frequency produced at the output of the mixer stage M is amplified by the intermediate frequency amplifier 1 and after demodulation in the demodulation stage 2, the resultant audio signal is supplied to the loudspeaker LS via the audio frequency amplifier stage 3.
		The muting stage 4 is sensitive to the presence of a carrier produced at the output of the intermediate frequency amplifier 1 regardless of whether or not the carrier is modulated and, in response to the presence of such a carrier, produces a "high" voltage at its output terminal 15.
	www.freepatentsonline.com /4394775.html (5091 words)

	Journal of Vision - Covert attention enhances letter identification without affecting channel tuning, by Talgar, Pelli, ...
		The average ratio of the channel peak frequency with a peripheral cue to that with a central– or distributed–neutral cue is not significantly different from 1 (p >.1), indicating that the observers used the same channel to perform the task under the three different cueing conditions.
		Moreover, the average ratio of the channel bandwidth (in octaves) with a peripheral cue to that with a central– or distributed–neutral cue did not differ significantly from 1 (p >.1), indicating that the channel’s bandwidth is independent of the cueing condition.
		Figure 6 depicts the peak channel frequencies for each of the three observers in the cueing conditions for high- and low-pass noise conditions.
	www.journalofvision.org /4/1/3/article.aspx (4876 words)

	Two Channel Frequency Counter -
		Each of the two inputs may be independently scaled to 6 digits to display frequency (from 0 Hz to 2 MHz), rate, or period (inverse of frequency).
		Laureate dual-channel frequency, rate and period meter is a basic operating mode of the Laureate counter with the...
		Channel A is a standard 1 MÎ© input for frequency measurements up...
	frequency.fqup.com /index.php?k=two-channel-frequency-counter (1067 words)

	AllRefer.com - multiplexing (Electrical Engineering) - Encyclopedia
		When multiplexing is performed, two or more channels are combined into a single channel, or, in a process often called demultiplexing, a single channel is divided into several subchannels.
		One type is frequency-division multiplexing, in which a single frequency channel is subdivided into two or more subchannels, each of which can then carry a smaller range of frequencies than could the original channel.
		Frequency-division multiplexing is used in television broadcasting, when audio and video signals share a single channel; in stereophonic FM radio broadcasting, when two audio signals share a single channel; and in microwave transmission of long-distance telephone calls, when 60 or more conversations are carried by a single microwave beam.
	reference.allrefer.com /encyclopedia/M/multiplx.html (312 words)

	[No title]
		Channel storage banks can be easily enabled or disabled while scanning by pressing the number key that corresponds with the desired channel storage bank.
		Each channel can be configured with a radio frequency, the desired mode for that frequency, and settings to allow a short delay after a transmission or lock the channel out from scanning operation.
		In these types of systems it may be possible to program multiple control channel frequencies into the same channel storage bank and allow the scanner to lock on to the different control channels as you move from zone to zone.
	harrymarnell.com /images/gre-pro96-manual.txt (18568 words)

	Frequency Channel (Site not responding. Last check: 2007-11-06)
		Although there are several different frequency channel settings, there is a slight overlap between the channels.
		For example, there are three non-overlapping channels available in the FCC regulatory domain.
		When choosing frequency channels for wireless stations in the vicinity of each other, you should choose frequency channels that are several channels apart from each other (e.g.
	shliapas.promedija.lt /Help/terms/frequency_channel.html (80 words)

	802.11 frequency allocations (Site not responding. Last check: 2007-11-06)
		The lower and middle band, accommodate 8 channels in a total bandwidth of 200 MHz and the upper band accommodates 4 channels in a 100 MHz bandwidth.
		The outermost channels of the lower and middle bands are centered 30 MHz from the outer edges.
		In addition to the frequency and channel allocations, transmit power is a key parameter regulated in the 5 GHz U-NII band.
	home.comcast.net /~sofa.spud/802.11_freqs/802.11freqs.html (286 words)

	Frequency channel - Wikipedia, the free encyclopedia
		Look for Frequency channel in Wiktionary, our sister dictionary project.
		Look for Frequency channel in the Commons, our repository for free images, music, sound, and video.
		If you have created this page in the past few minutes and it has not yet appeared, it may not be visible due to a delay in updating the database.
	en.wikipedia.org /wiki/Frequency_channel (103 words)

	Channel Vs Frequency -
		at this low frequency, channel 1 is approximately equal to channel 2 and...
		As with analog transmitters, flat frequency response across the channel passband is required.
		Connect channel 1 of the oscilloscope to the output signal from the function generator and connect channel...
	frequency.fqup.com /index.php?k=channel-vs-frequency (917 words)

	A New Wideband High Frequency Channel Simulation System
		Although narrowband models of the HF channel have existed for many years, they are applicable only to a limited set of actual narrowband channel conditions.
		The need for an HF channel model that is valid for both narrow and wide bandwidths over a more extensive range of channel conditions motivated the research reported in this paper.
		Wagner, J. Goldstein, W. Meyers, and P. Bello, "The HF skywave channel: measured scattering functions for midlatitude and auroral channels and estimates for short-term wideband HF rake modem performance," in Proc.
	www.comsoc.org /comm/private/1997/jan/26_45comm01-mastrangelo.html (572 words)

	Florida LTR Trunked System Information (Site not responding. Last check: 2007-11-06)
		If the channel is busy, the user must continue to monitor the channel until the co-channel user has terminated the conversation.
		Once a channel is selected, it becomes exclusive for the duration of the transmission and cannot be interrupted by other users.
		The frequencies listed without channel numbers are the overflow frequencies and still need their channel numbers figured out.
	home.cfl.rr.com /scanner/flaltr.htm (1622 words)

	John Conover: Spatial Distortion Reduction Headphone Amplifier
		This means that the high frequency listening environment for speakers can be approximated with headphones by crossfeeding about a factor 1/4 of the opposite channel's signal into the other channel, which is reduced by a factor of 1/4, such that it is still unity sound intensity.
		Those frequencies above Fl, (1100 Hz.,) the left and right input signals should be combined to produce "near stereo"; the sound in the left ear phone should consist of 75% of the left channel input signal, and 25% of the right channel input signal.
		Those frequencies have directional characteristics; if the sound from the left and right speakers are identical, (i.e., monophonic,) the sound would appear to come from a point source directly in front of the listener-for both speakers and headphones.
	www.johncon.com /john/SSheadphoneAmp (2852 words)

	CHANNEL - FREQUENCY ASSIGNMENT
		The FCC chose the frequency around 27MHZ, which is located at the top of the high-frequency spectrum.
		CB Radio Channel 9 may be used only for emergency communications or for traveler's assistance.
		The CB Radio operators become frustrated with the amount of channel congestion between Channels 1 and 40 and go for a ham radio operator's license.
	www.angelfire.com /pro/radioscanner/CB_INFO.htm (1385 words)

	Changing the Channel Frequency or Polarity (Site not responding. Last check: 2007-11-06)
		They have 24 channels, and the only difference is that a channel which is Vertical polarity on one may be Horizontal on another.
		Your receiver may for example, be looking at "Channel 11 Upper", but it may be a different "Channel 11" than the one actually in use (perhaps 11 Center or 11 Lower).
		Note: if the frequency is correct when you check [Menu 7] but the program is not visible, the polarity is usually the problem.
	www.adec.edu /sat-training/chapb2.htm (415 words)

	Channel frequency - Frequency Agile Modulator - F1001 (Site not responding. Last check: 2007-11-06)
		View Datasheet Request Ordering Information Four frequency counter channels; Frequency range from 0.059 Hz to 50000 Hz The role of spatial frequency channels in letter identification.
		For sinewave gratings, as expected, channel frequency equals sinewave frequency f(channel)=f.
		The 1-Channel Frequency Agile Mono Modulator is an integral part of the Greyfox cat.
	www.askfinder.com /asfd/channel-frequency.htm (411 words)

	Extended MLSE Diversity Receiver for the Time- and Frequency-Selective Channel - Hart, Taylor (ResearchIndex) (Site not responding. Last check: 2007-11-06)
		Although the new receiver structure and metric assume ideal channel state information (CSI), the receiver can be used wherever high-quality CSI is available, such...
		Conditioned on the channel coefficients and the symbol sequence, the log likelihood function can be written as (r(t)...
		108 Characterization of Randomly Time-Variant Linear Channels, I..
	citeseer.ist.psu.edu /hart97extended.html (665 words)

	Neural Responses in Primary Auditory Cortex Mimic Psychophysical, Across-Frequency-Channel, Gap-Detection Thresholds -- ...
		of its frequency response area with all activated frequency channels.
		The threshold at the characteristic frequency (CF) was determined
		Level-dependent representation of stimulus frequency in cat primary auditory cortex.
	jn.physiology.org /cgi/content/full/84/3/1453 (7103 words)

	OzTiVo Forums - Wrong frequency for Channel 10 in Brisbane
		I was quite impressed when I was finally able to change channels, but for some reason I couldn't get channel 10.
		Channel 10 was a bit 'grainy' on my TV, so I went and fiddled with my antenna.
		A quick search on the net showed that channel 10 was originally on 209.250MHz but was moved up by 1MHz to 210.250Mhz in order to accomodate channel 9A.
	oztivo.net /forums/showthread.php?t=370 (205 words)

	Extended MLSE Diversity Receiver for the Time- and Frequency-Selective Channel
		Although the new receiver structure and metric assume ideal channel-state information (CSI), the receiver can be used wherever high-quality CSI is available, such as a comb of pilot tones or time-isolated symbols.
		Bello, "Characterization of randomly time-variant linear channels," IEEE Trans.
		Cavers, "A reduced dimensionality propagation model for frequency selective Rayleigh fading channels," in ICC, Seattle, WA, June 1995, pp.
	www.comsoc.org /comm/private/1997/mar/322_45comm03-hart.html (483 words)

	Telecommunication Systems - Publications
		Effect of nonideal channel and SINR estimation to performance of WCDMA with adaptive modulation and coding..
		Channel estimation algorithm for space-time block coded OFDM sytems.
		EM-based estimators for ARMA parameters of multipath fading channels.
	www.vtt.fi /ele/research/tel/publications.htm (1301 words)

	Channel Frequency Satellite Tv (Site not responding. Last check: 2007-11-06)
		Channel Frequency Satellite Tv Channel Frequency Satellite Tv Get a 4-Receiver Satellite System Installed for Free
		The high frequency is down converted to a lower frequency...
		Frequency input 3.7 to 4.2 GHz Frequency output 950 to 1450 MHz Local oscillator frequency is...
	visithomebiz.com /te-satellite/1/channel-frequency-satellite-tv.html (706 words)

	nascar drivers frequency channel chart (Site not responding. Last check: 2007-11-06)
		Download frequency data (frequencies, tone codes, driver names, etc....
		You'll also receive a channel and frequency list with the Raceceiver and you can visit...
		Simply print one of our channel charts (the one for your model) off the web and you are...
	www.getnascarinfo.com /14/nascar-drivers-frequency-channel-chart.html (341 words)

	Channel Frequency Satellite Tv (Site not responding. Last check: 2007-11-06)
		Channel Frequency Satellite Tv Looking For channel frequency satellite tv
		Read about channel frequency satellite tv in the free online encyclopedia and dictionary.
		Find results for channel frequency satellite tv and anything else you are looking for instantly!
	www.lowerratet1.com /sattv/channel-frequency-satellite-tv.php (400 words)

	[No title]
		107.9) { alert('Enter a frequency between 87.9 and 107.9 MHz.\nDecimal point must be odd, e.g.
		89.7\n\n\nThis corresponds to FM channels 200 to 300.'); form1.answer1.value = ''; form1.number.value = ''; } else { if(number2==.2number2==.4number2==.6number2==.8number2==.0) { alert('Frequency value must end in an odd decimal:\n\n.1.3.5.7 or.9\n\n\nThe entered frequency will be increased to the next odd decimal.\n'); form1.number.value = Math.round(form1.number.value * 10.
		wavelength (m) = [speed of light (m/sec)] / [frequency (Hz = cycles/sec)]
	www.fcc.gov /mb/audio/bickel/findvalues.html (748 words)

	AMA Approved Radio Frequency Use Plan (Site not responding. Last check: 2007-11-06)
		Model aircraft may only be operated using only radio-control frequencies currently allowed by the Federal Communications Commission (FCC).
		Only individuals properly licensed by the FCC are authorized to operate equipment on Amateur Band frequencies.
		This page, and all contents, are Copyright © 1995-2005 by The Academy of Model Aeronautics Inc., Muncie, Indiana.
	www.modelaircraft.org /comp/frequency.htm (68 words)

	[No title] (Site not responding. Last check: 2007-11-06)
		This function should be called immeditially after the mixer_allocate() and before the first play() call.
		Otherwise the lowpass frequency may be unused until the next filter recompute.
		ch - channel freq - frequency in Hz.
	www.serve.com /~derekl/mame/old_mixer.c (605 words)

	MIMO Frequency selective channel estimation
		MIMO Frequency selective channel estimation - Venkat Reddy -
		complexity and also in terms of ability to produce the channel as
		There are many ways to estimate a MIMO channel, non-blind, semi-blind,
	www.dsprelated.com /showmessage/15494/1.php (279 words)

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