multiple systems channel interference
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Dynamic Load Balancing Through Coordinated Scheduling in Packet Data Systems
White Paper This paper consider scheduling schemes in which scheduling decisions are made jointly for a cluster of cells thereby enhancing performance through interference avoidance and dynamic load balancing. Third generation Code-Division Multiple Access... [10 Jul 2008]
Frequency-Hopping Versus Interference Cancellation for TD-CDMA
White Paper Slow Frequency-Hopping (SFH) with Frequency Overlap (FO) between adjacent carriers and interference cancellation are also included in the analysis, which considers the multipath Rayleigh fading channel (which models indoor and outdoor vehicular... [03 Jul 2008]
Transmitter-Based Multiuser Interference Rejection for the Down-Link of a Wireless CDMA System in a Multipath Environment
White Paper MultiUser Interference (MUI) and multipath effects observed by the receiver are anticipated and suppressed at the transmitter; channel equalization and multiuser detection are therefore not required. This paper introduces two methods that are able... [03 Jul 2008]
Frequency-Domain Interference Cancellation for MIMO-OFDM Systems
White Paper The proposed interference cancellation scheme uses the estimated channel coefficients and the channel state information (CSI) to reproduce the interference components, then iteratively cancel them from the received signals. [03 Jul 2008]
Blind Carrier Frequency Offset Estimation in SISO, MIMO and Multiuser OFDM Systems
White Paper The issues of channel nulls, multiuser interference and effects of multiple antennas are addressed analytically and tested via simulations. This paper demonstrates analytically how identifiability and performance of this blind CFO estimator depend... [03 Jul 2008]
Variable Bit Allocation for FH-CDMA Wireless Communication Systems
White Paper A frequency-hopped code-division multiple-access system can adapt to the different interference levels in hopping patterns and assign the slots different bit rates to increase the system capacity. The algorithms that achieve the most system... [03 Jul 2008]
A Pseudo Random Postfix OFDM Based Modulator for Multiple Antennæ Systems
White Paper Moreover two transceiver architectures are presented with an Alamouti based Space-Time (ST) block code: equalization schemes with or without postfix interference cancellation and related modulators. A new channel tracking strategy is detailed based... [24 Jan 2008]
Multi-Code Multicarrier CDMA: Performance Analysis
White Paper The bit error rate of the system is analytically derived in frequency selective fading, with Gaussian noise and multiple access interference. A novel multi-code multicarrier code division multiple access (MC-MC-CDMA) system is proposed and analyzed... [04 Jul 2007]
Space-Time Interference Cancellation in MIMO-OFDM Systems
White Paper The first stage uses time domain equalization to suppress co-channel interference, mitigate asynchronism, and shorten the post-equalization channel response to be no longer than the length of the cyclic prefix. [11 Apr 2007]
The Performance of OFDM-SDMA Systems With Power Amplifier Non-Linearities
White Paper The introduction of an array antenna system in the base station of a mobile communication system increases the spectral efficiency, reducing the co-channel interference and increasing the reuse factor of the systems. [11 Apr 2007]
Increasing Time Domain Diversity in OFDM Systems
White Paper However, extensive delay and Doppler spread may cause non-negligible Inter-Symbol Interference (ISI) and/or Inter-Carrier Interference (ICI) in OFDM systems. This paper proposes a method for increasing the Doppler spread of the multipath fading... [11 Apr 2007]
A Space-Time FIR Equalizer Training Algorithm for MIMO-OFDM Systems
White Paper This paper proposes a two-stage receiver structure consisting of an initial space-time equalization for suppressing the Co-Channel Interference (CCI), shortening the channel, and mitigating asynchronicity followed by parallel equalization and... [11 Apr 2007]
Performance of Space-Frequency Techniques Over Measured Channels in MIMO-OFDM Systems
White Paper The paper investigates Space-Frequency Trellis Coded Modulations (SFTCM) along with a number of BLAST detection algorithms: ML, Successive Interference Cancellation (original BLAST); linear ZF; ZF-ML hybrid. [11 Apr 2007]
On the Use of Adaptive Loading Algorithms in MIMO-OFDM Systems
White Paper Channel matrix Singular Value Decomposition (SVD) method has been employed in MIMO-OFDM system in order to overcome subchannel interference. Chaw's and Compello's algorithms have been implemented to obtain a bit and power allocation for each... [11 Apr 2007]
Characterizing the Capacity Region in Multi-Radio Multi-Channel Wireless Mesh Networks
White Paper However, due to the limited number of available orthogonal channels, interference is still a factor in such networks. Networks based on the IEEE 802.11a/b/g and 802.16 standards are examples of these systems. [07 Dec 2006]
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