 Ungefär 127 resultat  books.google.com Another parameter evenmore importantthan peakspectralefficiency, and perhaps
more realistic, is the mean spectral efficiency, defined as the sum of users data
rates normalized by the bandwidthandthe numberofcells. Inthe current definition
... 

 books.google.com That is, spectral efficiency defined in terms of channels/MHz/km2 can be
expressed as 77! = (Total number of channels)/ [(system bandwidth)(total
coverage area)] And, spectral efficiency defined in terms of Erlangs/MHz/km2 can
be expressed ... 

 books.google.com Spectral efficiency, defined as the ratio of capacity per unit bandwidth, measures
the ability of a wireless system to deliver information with a given amount of radio
spectrum and provides another key metric of the wireless system's quality. 

 books.google.com ... the spectral efficiency defined as the data rate in bits per second per Hz unit of
bandwidth: spectral efficiency=channel throughput/channel bandwidth
Depending on the efficiency of the communication systems and the signalto
noise ratio, ... 

 books.google.com Therefore, spectral efficiency, defined by electrical energy output in relation to the
irradiated energy, decreases as wavelengths become smaller. The spectral
efficiency is best when the amount of energy from the incoming photon is just ... 

 books.google.com Kamilo Feher  1996  412 sidor In Table 1.2, the theoretical and practical spectral efficiency of PAM and also of
partialresponse systems (PRS) is listed [Feher, 1.5]. Note that in the case of PAM
systems, the practical spectral efficiency, defined at the 35 to 50dB outofband
... 

 books.google.com Efficiency. Recall that spectral efficiency, defined in (6.7), is a measure of the bit
rate achieved per Hz of bandwidth. To determine the maximum achievable
spectral efficiency for QAM, we use (6.8), repeated here for convenience, log2M »
§. 

 books.google.com ... a large increase in the capacity per Hz, also known as the spectral efficiency
defined as the data rate in bits per second per Hz unit of bandwidth: spectral
efficiency = channel throughput/channel bandwidth Depending on the efficiency
of the ... 

 books.google.com For a singleuser channel, the performance metric of interest is the spectral
efficiency, defined as the data rate achieved per unit of bandwidth and measured
in units of bits per second per Hertz. When it is understood that the bandwidth is
held ... 

 books.google.com Naturally, with limited spectrum resources, MIMO techniques have become
essential for achieving the minimum requirements (target cell spectral efficiency,
peak spectral efficiency, and cell edge user spectral efficiency) defined by the ITU
... 

 