wideband
RSS widebandThe flexcell Platform: A Software-Defined Radio Architecture for the Next Generation of Wireless Hubs and Open Architecture Wireless Hubs
White Paper The RF board receives the wideband analog RF signal from one of the antennas, converts the signal through analog circuits to a wideband analog IF signal, and then converts the signal to a... [02 Sep 2008]
On the Capacity of Noncoherent Wideband MIMO-OFDM Systems
White Paper In this paper the capacity behavior of full-band MIMO-OFDM systems in the absence of channel state information both at the transmitter and the receiver is studied. Based on capacity lower and upper bounds, the transmission rate penalty... [09 Aug 2008]
Utilizing Path Diversity in Optical Packet Switched Interconnection Networks
White Paper A SPINet switching fabric is comprised of a set of wideband 2×2 photonic switching nodes organized in a Multistage Interconnection Network (MIN). Semiconductor Optical Amplifiers (SOAs) are used as switching elements to... [18 Jul 2008]
Robust Bandwidth Extension of Noise-Corrupted Narrowband Speech
White Paper This paper presents a new bandwidth extension algorithm for converting narrowband telephone speech into wideband speech using a transformation in the mel cepstral domain. Unlike previous approaches, the proposed method... [11 Jul 2008]
Advanced Design Methods of Doherty Amplifier for Wide Bandwidth, High Efficiency Base Station Power Amplifiers
White Paper Third, it optimizes the bias circuit to solve an asymmetric ACLR (Adjacent Channel Leakage Ratio) characteristics for wideband signals such as WCDMA 4FA. This paper has proposed advanced design methods of Doherty... [11 Jul 2008]
Ultra Wideband Double Discon Antenna Showing 30:1 Bandwidth
White Paper This paper proposes an improved discon antenna (double discone antenna). The double discone antenna consists of two discon antennas having two different dimension. One small discon antenna covers high frequency bandwidth, the other big... [11 Jul 2008]
Efficient Network Switching Hierarchy
White Paper In the TDM world, both wideband (VT1.5 - 1.5 Mbps) and broadband (STS-1 - 51.8 Mbps) grooming are required in particular segments of the network to manage different traffic levels - serving distinct but complementary... [10 Jul 2008]
On the Relation Between Bandwidth and Robustness of UWB Channel in Complex Confined Areas
White Paper Ultra-Wideband (UWB) communication has been the subject of extensive research in recent years due to its unique capabilities and potential applications, particularly in short-range multiple access wireless communications. [08 Jul 2008]
RF Measurements for Ultra Wideband Communications eSeminar
White Paper UWB radio is getting a great deal of interest for wireless data transfer, because it offers an alternative way to use the scarce radio spectrum. Regulations around the world are at different stages, but allocations in the 3.1-10.6GHz... [03 Jul 2008]
Power Allocation for Multi-Band OFDM UWB Communication Networks
White Paper Ultra wideband (UWB) technology has shown significant advantages over other existing ones for short- or medium-range high speed communications. It can adopt different modulation and signaling formats, among which... [03 Jul 2008]
Ultra-Wideband: A Wireless Renaissance in the Making
White Paper Ultra-wideband is a wireless technology that transmits an extremely low power signal over a wide swath of radio spectrum, achieving data rates as high as 114 Mbps today. Bluetooth, IEEE 802.11a/b/g,... [03 Jul 2008]
The Evolution of GSM and WCDMA into a Seamless Network
White Paper This white paper is intended for global system for mobile communications (GSM) operators who are interested in understanding Ericsson's view on how existing GSM networks will evolve and interwork with wideband code... [03 Jul 2008]
Unleashing the CDMA Advantage in WCDMA
White Paper The air interface selected for UMTS is Wideband Code Division Multiple Access (WCDMA). This solution offers operators a number of significant advantages over alternative technologies, including increased network... [03 Jul 2008]
WCDMA Systems Interoperability Testing
White Paper Because the Wideband Code Division Multiple Access (WCDMA) standard enables a wide variety of new 3G system implementations, operators must be prepared to interconnect products from different vendors. [03 Jul 2008]
EDGE - Introduction of High-Speed Data in GSM/GPRS Networks
White Paper This white paper discusses the packet-switched enhancement, EGPRS; how enhanced data for global evolution (EDGE) can play an important role in the evolution toward wideband code division multiple access (WCDMA); and to... [03 Jul 2008]
