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- Capacity Gains of Single Antenna Interference Cancellation in GSM
- Single Antenna Interference Cancellation SAIC is a very interesting and promising technology currently being standardized in 3GPP as part of GERAN Release 6. This interference reduction technique takes advantage of the latest developments in signal processing and receiver algorithms in a cost-efficient way. In most advantageous interference conditions, SAIC can...
- Tags: Algorithm, Nokia Corp., Network, GSM, Single Antenna Interference Cancellation, Engineering, Cellular Phones, Networking, Consumer Electronics, Personal Technology
- White papers 2004-05-27
Additional Resources
- Cancellation Error Statistics in a CDMA System Using Successive Interference Cancellation
- Successive interference cancellation SIC is a promising practical scheme for increasing the capacity of CDMA systems. The interference cancellation is never perfect, and the residual cancellation errors propagate because of the successive nature of the decoding. In fact, these residual errors are the principle capacity-limiting issue in SIC systems. Until...
- Tags: CDMA, University Of Texas, Cancellation Error, Interference Cancellation, Successive Interference Cancellation, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2005-04-05
- Iterative Power Control for Imperfect Successive Interference Cancellation
- Successive interference cancellation SIC is a technique for increasing the capacity of cellular code-division multipleaccess CDMA systems. To be successful, SIC systems require a specific distribution of the users' received powers, especially in the inevitable event of imperfect interference cancellation. This apparent complication of standard CDMA power control has been...
- Tags: CDMA, IEEE, Complication, Successive Interference Cancellation, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2005-05-01
- Multiuser Interference Cancellation for OFDM Systems With Frequency Offset
- This paper proposes a method to counteract the effect of different frequency offsets of the users in a OFDMA uplink system with frequency selective Rayleigh fading channel. The multiple access interference is reduced by reconstructing and removing the interfering signals. This is done by accomplish Successive or Selective Cancellation. The...
- Tags: Frequency, Access Interference, OFDM, Wireless
- White papers 2003-07-15
- Transmission Capacity of Wireless Ad Hoc Networks With Successive Interference Cancellation
- The transmission capacity of a wireless ad hoc network can be defined as the maximum allowable area spectral efficiency such that the outage probability does not exceed some specified threshold. This paper studies the improvement in transmission capacity obtainable with successive interference cancellation SIC, an important receiver technique that has...
- Tags: Transmission Capacity, Wi-Fi, Wireless, Networking
- White papers 2005-08-19
- Diversity Reception for OFDM Systems Using Antenna Arrays
- Orthogonal Frequency Division Multiplexing OFDM is a multicarrier modulation scheme that achieves high spectral efficiency by using minimally densely spaced orthogonal subcarriers without increasing the transmitter and receiver complexities. Antenna arrays are a powerful means to exploit the spatial domain to provide an extra layer of co-channel interference cancellation and...
- Tags: IEEE, Array-OFDM System, OFDM, Wireless
- White papers 2005-12-01
- The Impact of Fading on the Performance of Large CDMA With Parallel Interference Cancellation
- In this paper, the large-system performance of a multistage first-order linear Partial Parallel Interference Cancellation PPIC receiver for a synchronous Direct-Sequence Code Division Multiple Access (DS-CDMA) system over a frequency-flat fading channel is addressed. This performance is evaluated by simulating the moments of the eigenvalues of a random covariance matrix....
- Tags: Performance, CDMA, Concordia University, Performance Management, Human Resources, Workforce Management
- White papers
- Positioning Analysis of Multiple Antennas in a Dense RFID Reader Environment
- The study and analysis of RFID antenna positioning is important for supply chain large-scale deployment. In a dense reader environment, there will be multiples of RFID readers and reader's interference will reduce the reliability and efficiency of the RFID system. In the worst case, the interference would paralyse an entire...
- Tags: Environment, Positioning, Antenna Positioning, RFID, Wireless, Security, Biometrics
- White papers 2006-01-23
- RF interference: Just how important are antennas
- Being able to co-locate multiple RF systems within millimeters of each other in modern wireless devices is in large part due to reducing RF interference. Many of these "interference-busting" innovations are the result of engineers making improvements to antenna systems. by Michael Kassner
- Tags: Radio Frequency, Radio, Antenna, Radio Frequency Isolation, Ruckus Wireless, Q, Equipment Developer, Advertising & Promotion, Network Technology, Marketing, Networking, Michael Kassner
- Blog posts 2008-06-15
- Adaptive Joint Interference Cancellation and Space-Time Block Decoding for IEEE 802.11b WLAN Systems
- Digital transmission in Wireless Local Area Networks WLANs according to the IEEE 802.11b standard suffers from fading, InterSymbol Interference ISI, and Co-Channel Interference CCI. In this paper, receivers with Joint Interference Cancellation and time reversal Space-Time block Decoding JICSTD are proposed for an enhanced version of the IEEE 802.11b WLAN...
- Tags: IEEE 802.11, University Of British Columbia, Wireless LANs, Wi-Fi, Wireless, LANs, Networking
- White papers 2006-04-03
- Clustered OFDM With Adaptive Antenna Arrays for Interference Suppression
- This paper investigates clustered OFDM with adaptive antenna arrays for interference suppression. To calculate weights for interference suppression, instantaneous correlations of the received signals and channel responses corresponding to the desired signal have to be estimated. Therefore, a polynomial based parameter estimator is proposed to combat the severe leakage of...
- Tags: Georgia Institute Of Technology, Interference Suppression, OFDM, Construction, Wireless
- White papers
- Win32 I/O Cancellation Support in Windows Vista
- This whitepaper is intended for Independent Software Vendors and others interested in leveraging new cancellation support to improve the robustness of their Windows applications. This enables improved customer experience through direct cancellation of and recovery from slow or blocked file input/output. Windows Vista provides kernel and driver enhancements, as well...
- Tags: Cancellation, Win32, Microsoft Windows Vista, Microsoft Windows, Operating Systems, Software
- White papers 2005-09-01
- Frequency Shift Based Multiuser Canceller for DS-CDMA Systems
- The cyclostationary properties of Direct Sequence Spread Spectrum signals are well known. These cyclostationary properties imply a redundancy between frequency components separated by multiples of the symbol rate. This paper presents a Multiple Access Interference Canceller that explores this property and applies to UMTS-TDD. The results show total cancellation of...
- Tags: Property
- White papers
- A Novel Compact Cable-Fed Antenna for a GSM/DCS Handset
- By using a branch-line ground plane, a monopole radiator, and parasitic patches, a newly compact cable-fed antenna is investigated in order to overcome the thickness problem of the Planar Inverted-F Antenna PIFA. The designed antenna has dimensions of only 40 12 1 mm and the impedance bandwidth of the proposed...
- Tags: John Wiley & Sons Inc., Antenna, Patches, Cellular Phones, Consumer Electronics, Personal Technology
- White papers 2005-09-05
- how improve wireless reception from a hotspot
- i'm receiving a weak and fluctuating wireless signal at a temporary residence. is there a way to improve strength and steadyness of signal to my toshiba satellite laptop? wireless router? antenna? I'm a novice. Any and all suggestions will be deeply appreciated!Thanks!fibonacci9@yahoo.comnoise, attenuation, interferenceto get a good signal, best...
- Tags: Wi-Fi, Construction, fibonacci9@..., HotSpot, wireless
- Discussion threads 2007-10-22
- Miniaturized Printed Wire Antenna for Wireless Communications
- In this paper miniaturized printed-circuit-board wire antennas are investigated for wireless local access network WLAN and Bluetooth applications. The proposed wire antenna in F-shape could have a much smaller area than an inverted F antenna with a similar bandwidth. It is found that F-antenna can usually be inductively tuned but...
- Tags: Bandwidth, Wireless Communication, Antenna, Bluetooth, Wi-Fi, Wireless
- White papers 2005-08-09
- iTunes Antenna (widget)
- iTunes Antenna displays the iTunes store's top songs, albums, new releases, and so on. If you click a list item, iTunes Antenna will show details and artwork. This version is the first release on CNET Download.com.
- Tags: Apple iTunes, Digital Music, Digital Media, Personal Technology, Consumer Electronics
- Software downloads 2007-05-30
- Printed Straight F Antennas for WLAN and Bluetooth
- Miniaturized printed-circuit-board antennas are proposed in PCMCIA cards for WALN and Bluetooth applications. The proposed antenna is a straight F in shape printed on a FR4 substrate together with the rest of the circuit components, providing a low-cost antenna solution. The straight F antenna resembles a printed inverted F antenna,...
- Tags: WLAN, Antenna, F Antenna, Bluetooth, Wireless LANs, LANs, Wi-Fi, Wireless, Networking
- White papers 2003-01-15
- Modeling and Simulation of IEEE 802.11 Wireless-LAN and Bluetooth Piconet Range Interference
- The proximity of wireless devices with one another often results in interference in the unlicensed 2.4 GHz ISM bandwidth. Interference has been recognized as a major problem to wireless network performance and improvement. This paper reports a proposed and investigated Interference Range Model IRM, a model that allows a user...
- Tags: IEEE 802.11, Interference, Modeling, Wi-Fi, Performance Management, Research & Development, Wireless, Wireless LANs, Bluetooth, Human Resources, Workforce Management, Business Operations
- White papers 2004-09-20
- A Novel Microstrip Patch Antenna With Large Impedance Bandwidth in VHF/UHF Range
- In this paper a novel antenna is presented. This antenna, employing microstrip circular disc as radiator is seen to perform over a large impedance bandwidth (130MHz to 876 MHz). The disk resonator is loaded with L-C-R circuit across a selective location in the disk via a thin shorting pin. The...
- Tags: Bandwidth, Disk, Antenna, Disk Resonator
- White papers 2006-01-09
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