multiple systems interference
Interference on the radar for FCC "white space"
News Field tests to determine whether the Federal Communications Commission should open up unused TV spectrum for wireless broadband services are getting mixed reviews as different methods for avoiding spectrum interference are being tested in the real... [12 Aug 2008]
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]
Multiple-Access Interference-Resistant Acquisition for Band-Limited CDMA Systems With Random Sequences
White Paper The problem of estimating the propagation delay of a new user in a coded band-limited DS/CDMA system in the presence of Multiple Access Interference (MAI) is considered. MAI-resistant acquisition schemes are developed for a general CDMA system... [03 Jul 2008]
SINR Maximizing Space-Time Filtering for Asynchronous DS-CDMA
White Paper The use of a base-station antenna array is strongly endorsed in these systems, because of its capabilities of filtering out the interference in the space domain. The optimization of the filter response is performed jointly in the space and time... [03 Jul 2008]
Frequency-Hopping Versus Interference Cancellation for TD-CDMA
White Paper The work discussed in this paper considers asynchronous Time Division Code Division Multiple Access (TD-CDMA) systems with Rake receivers and one stage of Parallel Interference Cancellation (PIC) or Serial Interference Cancellation (SIC). [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. In wireless Code Division Multiple Access (CDMA... [03 Jul 2008]
Adaptive Nonuniform Phase-Shift-Key Modulation for Multimedia Traffic in Wireless Networks
White Paper The characteristics of mobile wireless communication channels fluctuate for many reasons, including movement of the radios, changes in path attenuation, and variations in interference. Several adaptive signaling techniques have been proposed for... [03 Jul 2008]
A Code-Division Switch Architecture for Satellite Applications
White Paper The CDS has shown to route CDMA user channels without introducing interference. It also examines the amplitude distribution of the combined signal in the CDS bus and the interference evaluation of the end-to-end link in the proposed applications. [03 Jul 2008]
Optimal Time-Hopping Scheme for CDMA Air Interface in Broad-Band Wireless Systems
White Paper This paper proposes an optimal time-hopping scheme based on the theory of finite projective planes for direct sequence code division multiple access to distribute interference evenly among participating users. [03 Jul 2008]
Modeling of Code Acquisition Process in CDMA Networks - Asynchronous Systems
White Paper Due to Multiple Access Interference (MAI), the process is characterized by a different probability of signal detection and probability of a false alarm in each cell of the code delay uncertainty region. [03 Jul 2008]
Performance Evaluation of Multiple IEEE 802.11b WLAN Stations in the Presence of Bluetooth Radio Interference
White Paper The results focus on the impact of Bluetooth interference on IEEE 802.11(b) WLAN systems. There are several papers published in the past few years about the evaluation of IEEE 802.11(b) WLAN performance degradation due to Bluetooth radio interference. [03 Jul 2008]
Frequency-Domain Interference Cancellation for MIMO-OFDM Systems
White Paper This paper proposes a new interference cancellation scheme for multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems in the presence of intersymbol interference (ISI). [03 Jul 2008]
Multiple Antennae Receive Diversity for Mobile OFDM Systems
White Paper It considers the use of multiple antennas to combat time-selective fading and OFDM transmission in combination with an appropriate guard interval to suppress inter-symbol interference. This paper investigates receive diversity for OFDM-based... [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. Relying on a kurtosis-type criterion, in this paper a low-complexity blind carrier frequency offset (CFO... [03 Jul 2008]
A Spreading Sequence Allocation Procedure for MC-CDMA Transmission Systems
White Paper This new technique, which relies on an analytical evaluation of the multiple access interference (MAI), mitigates the interference between different users by optimizing the spreading sequence selection within a given spreading sequence family. [03 Jul 2008]
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