Sciweavers

TWC
2008
86views more  TWC 2008»
13 years 11 months ago
On the Spectral Efficiency of CDMA Downlink Cellular Mobile Networks
A new accurate mathematical analysis is presented for the efficient computation of the spectral efficiency of CDMA downlink wireless communication systems in the presence of multip...
Khairi Ashour Hamdi, Pongsatorn Sedtheetorn
TCOM
2008
88views more  TCOM 2008»
13 years 11 months ago
A novel method for increasing the spectral efficiency of optical CDMA
Stefano Galli, Ronald Menendez, Evgenii Narimanov,...
ETT
2006
88views Education» more  ETT 2006»
13 years 12 months ago
On the outage behaviour of large DS-CDMA systems with LMMSE detection
Abstract-- The outage behaviour of the single cell DSCDMA uplink is investigated for flat Rayleigh fading channels. Goal of the work is to find an analytical way for the optimisati...
Oliver Prätor, Gerhard Fettweis
CORR
2006
Springer
76views Education» more  CORR 2006»
13 years 12 months ago
Complexity Constrained Noise-Free CDMA: Optimal Power Distribution and Spectral Efficiency
The issue of multiuser cooperation in a complexity constrained noise-free CDMA channel is addressed. Multiuser cooperation is imperative if conventional demodulation is expected to...
Rodrigo de Miguel, Ralf R. Müller
CORR
2008
Springer
212views Education» more  CORR 2008»
13 years 12 months ago
Joint Adaptive Modulation-Coding and Cooperative ARQ for Wireless Relay Networks
This paper presents a cross-layer approach to jointly design adaptive modulation and coding (AMC) at the physical layer and cooperative truncated automatic repeat request (ARQ) pro...
Morteza Mardani, Jalil S. Harsini, Farshad Lahouti...
CORR
2008
Springer
125views Education» more  CORR 2008»
13 years 12 months ago
Cross-Layer Link Adaptation Design for Relay Channels with Cooperative ARQ Protocol
The cooperative automatic repeat request (C-ARQ) is a link layer relaying protocol which exploits the spatial diversity and allows the relay node to retransmit the source data pac...
Morteza Mardani, Jalil S. Harsini, Farshad Lahouti
CORR
2008
Springer
124views Education» more  CORR 2008»
13 years 12 months ago
High Performance Cooperative Transmission Protocols Based on Multiuser Detection and Network Coding
Abstract--Cooperative transmission is an emerging communication technique that takes advantage of the broadcast nature of wireless channels. However, due to low spectral efficiency...
Zhu Han, Xin Zhang, H. Vincent Poor
CORR
2008
Springer
106views Education» more  CORR 2008»
13 years 12 months ago
Spectral efficiency and optimal medium access control of random access systems over large random spreading CDMA
This paper analyzes the spectral efficiency as a function of medium access control (MAC) for large random spreading CDMA random access systems that employ a linear receiver. It is ...
Yi Sun
CORR
2010
Springer
123views Education» more  CORR 2010»
13 years 12 months ago
Mutual Information of IID Complex Gaussian Signals on Block Rayleigh-faded Channels
We present a method to compute, quickly and efficiently, the mutual information achieved by an IID (independent identically distributed) complex Gaussian input on a block Rayleigh-...
Fredrik Rusek, Angel Lozano, Nihar Jindal
GLOBECOM
2007
IEEE
14 years 3 months ago
Spectral Efficiency of Cognitive Radio Systems
In this contribution1 , we investigate the idea of using cognitive radio to reuse locally unused spectrum to increase the total system capacity. We consider a multiband/wideband sy...
Majed Haddad, Aawatif Menouni Hayar, Méroua...