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Proceedings ArticleDOI

Combined equalization and cochannel interference cancellation for the downlink using tentative decisions

K. Medepalli, +1 more
- Vol. 1, pp 637-641
TLDR
For the downlink, a low complexity signal enhancing receiver that will work with a single receive antenna is developed that offers significant gains at high interfering signal powers especially when the channel memory is low.
Abstract: 
The capacity of TDMA digital cellular systems like IS-136, GSM and their evolution IS-136HS and EDGE is limited by the intersymbol interference (ISI) arising from multipath propagation and co-channel interference (CCI) due to frequency reuse. The focus of this work is to develop for the downlink, a low complexity signal enhancing receiver that will work with a single receive antenna. This paper proposes a technique to combat both ISI and CCI using tentative decisions obtained through a preliminary detector. These decisions are used in mitigating ISI and CCI to produce final decisions. It is shown that the receiver proposed offers significant gains at high interfering signal powers especially when the channel memory is low.

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Citations
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Patent

Methods of receiving co-channel signals by channel separation and successive cancellation and related receivers

Huseyin Arslan, +1 more
TL;DR: In this article, a method for receiving a plurality of communications from a respective plurality of transmitters using a common carrier frequency is proposed, where the first and second separated signals correspond to the first information signal and second information signal, respectively.
Journal ArticleDOI

Challenges in low-cost wireless data transmission

Roy D. Yates, +1 more
- 01 May 2000 - 
TL;DR: Specific issues that are relevant for wireless data tier architectures range from the physical layer extending to radio resource management and even application layers, and are described for transceiver techniques andRadio resource management.
Journal ArticleDOI

Overloaded array processing with spatially reduced search joint detection

J.E. Hicks, +4 more
- 01 Aug 2001 - 
TL;DR: An iterative joint detection technique, spatially reduced search joint detection (SRSJD), is proposed that well approximates the joint maximum likelihood (JML) receiver, while reducing its computational complexity by several orders of magnitude.
Patent

Channel estimation method operable to cancel a dominant disturber signal from a received signal

Arkady Molev-Shteiman, +2 more
TL;DR: In this article, the estimated channel impulse response and midamble are combined with a known sequence such as that provided by training sequences of the mid-amble within RF bursts.
Patent

Multiuser detection for wireless communications systems in the presence of Interference

Eko N. Onggosanusi, +2 more
TL;DR: In this article, the authors proposed a system and method for detecting transmissions from multiple users in a digital wireless communications system in the presence of interference, which comprises derotating a received signal by a specified amount, determining channel estimates, which can include the determination of the number of users (interferers plus a desired user), and extracting information transmitted by the desired user from the received signal.
References
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Journal ArticleDOI

Adaptive Cancellation of Nonlinear Intersymbol Interference for Voiceband Data Transmission

Ezio Biglieri, +3 more
- 01 Sep 1984 - 
TL;DR: Two related cancellation techniques based on "tentative" decisions are proposed for removing intersymbol interference, due to channel nonlinearities, for voiceband data transmission, and can offer substantial performance improvements for 16-point QAM systems.
Proceedings ArticleDOI

Adaptive arrays and MLSE equalization

Greg Bottomley, +1 more
TL;DR: In this article, an algorithm is proposed which combines adaptive array processing with MLSE equalization to mitigate fading, time dispersion, and interference, and the optimal metric for the MLSE structure is derived.
Journal ArticleDOI

Adaptive cancellation of intersymbol interference for data transmission

Allen Gersho, +1 more
- 01 Nov 1981 - 
TL;DR: In this paper, a technique for detecting transmitted data symbols contained in a modulated signal that has been degraded by a linear dispersive channel and additive Gaussian noise is proposed. But the cancellation approach, unlike equalization, offers the possibility of removing interference without enhancing the level of noise already present in the received waveform.
Journal ArticleDOI

Suppression of adjacent-channel, cochannel, and intersymbol interference by equalizers and linear combiners

Brent R. Petersen, +1 more
- 01 Dec 1994 - 
TL;DR: The ability of a linear equalizer/combiner or decision-feedback equalizer to suppress all received adjacent-channel, intersymbol, and cochannel interference is described and the number of interferers that may be suppressible by a generalized zero-forcing linear equalizers/combiners is described.
Journal ArticleDOI

Interference cancelling equalizer (ICE) for mobile radio communication

H. Yoshino, +2 more
- 01 Nov 1997 - 
TL;DR: An adaptive interference cancelling equalizer (ICE), which not only equalizes intersymbol interference (ISI), but also cancels cochannel interference (CCI) in the received signal in Rayleigh-fading environments, is proposed.