Adaptive equalization

Qureshi, Shahzad Ahmad

doi:10.1109/proc.1985.13298

Cited by 1,065 publications

(314 citation statements)

References 95 publications

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“…If the interval between successive signals is greater than the multipath spread, then successive signal outputs from the matched filters u*(-t) are isolated. Conversely, if the interval between signals is less than the multipath spread, one should either use a different set of signals on adjacent signalling intervals or should somehow combine the above receiver with adaptive equalization [Qur85].…”

Section: If Um(t) Is Transmitted Then the Output Wmm(t) Of The Matmentioning

confidence: 99%

An Inequality on the Capacity Region of Multiaccess Multipath Channels

Gallager

1994

Communications and Cryptography

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The effects of multiaccess sources and time varying multipath are considered in analyzing a system in which multiple sources communicate with a fixed base station. We discuss detection and the use of stripping in a multiaccess multipath environment. We finally derive a capacity for these systems. It turns out that CDMA type systems are inherently capable (theoretically) of higher rates than systems such as slow frequency hopping that maintain orthogonality between users.

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Section: If Um(t) Is Transmitted Then the Output Wmm(t) Of The Matmentioning

confidence: 99%

An Inequality on the Capacity Region of Multiaccess Multipath Channels

Gallager

1994

Communications and Cryptography

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“…Consequently, the term 'electrical length' is used instead of the actual cable length [8]. As an illustration, a spread of cable transmission losses for three typical UTP cables is shown in Figure 2.…”

Section: Line Approximation and Simulation Resultsmentioning

confidence: 99%

T1/E1/J1 receiver in CMOS

Sobot

Guo

2008

Circuit Theory & Apps

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SUMMARYBehavioural model, simulation and testing results of a mixed-signal short-/long-haul receiver suitable for high-speed T1/E1/J1 application in CMOS are presented. The measured results demonstrate successful recovery of distorted incoming signals attenuated from 0 to 44 dB (max). The mixed-signal part of the receiver chip occupies area of 1.2mm×1.8mm in CMOS 0.35 m process and requires typically 120 mW of power at 3.3 V power supply. Digital framer supports the operation of the receiver whereas local RAM is used for storing the unshielded twisted pair cable models that can be easily reprogrammed.

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“…The fullband equaliser's ability to combat ISI is limited by the channel noise v[n] [1]. In reference to Fig.…”

Section: Fig 2 Subband Adaptive Equaliser Structurementioning

confidence: 99%

“…1 illustrates a general block diagram for channel equalisation [1]. For a minimum mean square equaliser (MMSE), adaptive algorithms can be employed to adapt the equaliser w[n] by minimising the error between the received signal y[n] and the training sequence d [n].…”

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confidence: 99%