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TWC
2008
145views more  TWC 2008»
8 years 5 months ago
Generalized Window-Based PN Acquisition Scheme in CDMA Spread Spectrum Systems
In this letter, we propose a generalized version of the window-based pseudonoise (PN) acquisition scheme verifying one or more best hypotheses rather than the best one per search w...
Kwang Man Ok, Chung Gu Kang
TWC
2008
140views more  TWC 2008»
8 years 6 months ago
On the Performance of Spectrally-Encoded Spread-Time Ultrawideband CDMA Communication Systems
In this paper we study the performance of Spectrally-Encoded Spread-Time (SE/ST) technique when applied to ultrawideband (UWB) signals in the context of wireless code-division mult...
Mahmoud Farhang, Jawad A. Salehi
TWC
2008
142views more  TWC 2008»
8 years 6 months ago
Robust Ultra-Wideband Signal Acquisition
Ultra-wideband (UWB) communication is envisaged to be deployed in indoor environments, where the noise distribution is decidedly non-Gaussian. A critical challenge for impulse radi...
Ersen Ekrem, Mutlu Koca, Hakan Deliç
TWC
2008
235views more  TWC 2008»
8 years 6 months ago
Optimal spectrum sensing framework for cognitive radio networks
Spectrum sensing is the key enabling technology for cognitive radio networks. The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive r...
Won-Yeol Lee, Ian F. Akyildiz
TWC
2008
111views more  TWC 2008»
8 years 7 months ago
A Game-Theoretic Approach for Exploiting Multiuser Diversity in Cooperative Slotted Aloha
Abstract-- Multiuser diversity gains can be achieved by assigning channels to users with better channel quality in multiuser systems. To avoid the extensive information exchange re...
Dandan Wang, Cristina Comaniciu, Hlaing Minn, Naof...
TWC
2008
111views more  TWC 2008»
8 years 7 months ago
Constellation labeling maps for low error floors
A constellation labeling map is the assignment of a bit pattern to each symbol in a signal-set constellation. In a system with bit-interleaved coded-modulation and iterative decod...
Don J. Torrieri, Matthew C. Valenti
TWC
2008
154views more  TWC 2008»
8 years 7 months ago
Threshold Selection for SNR-based Selective Digital Relaying in Cooperative Wireless Networks
This paper studies selective relaying schemes based on signal-to-noise-ratio (SNR) to minimize the end-to-end (e2e) bit error rate (BER) in cooperative digital relaying systems usi...
Furuzan Atay Onat, Abdulkareem Adinoyi, Yijia Fan,...
TWC
2008
187views more  TWC 2008»
8 years 7 months ago
Peak restoration in ofdm receiver with clipping a/d converter
OFDM signals suffer from a large Peak to Average Power Ratio, which requires large power back-offs in the transmit and receive chains. This paper studies two digital postprocessing...
Ronald Rietman, Jean-Paul M. G. Linnartz
TWC
2008
139views more  TWC 2008»
8 years 7 months ago
Statistical Multimode Transmit Antenna Selection for Limited Feedback MIMO Systems
In a wireless multiple-input multiple-output (MIMO) system, transmit antenna selection is an effective means of achieving good performance with low complexity. We consider spatial ...
Chang Soon Park, Kwang Bok Lee
TWC
2008
140views more  TWC 2008»
8 years 7 months ago
Joint Twofold-Iterative Channel Estimation and Multiuser Detection for MIMO-OFDM Systems
This paper presents an iterative receiver for Multiple-Input Multiple-Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM) systems over time-variant wireless channels. T...
Pierluigi Salvo Rossi, Rald R. Müller
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