capacity multiplexing
Looking Beyond the C-Band
White Paper Telecommunications carriers, faced with the challenge of meeting the escalating demand for bandwidth, are looking to Dense Wave Division Multiplexing (DWDM) system providers to help them cost-effectively get more capacity on their fiber optic... [03 Jul 2008]
Application Control with the AppSwitch Series of 7 Layer Switches
White Paper It remains to be seen whether WAN costs will follow a friendlier cost curve in the face of revolutionary WAN technologies, such as terabit multi-service Internet routers, Dense Wavelength Division Multiplexing (DWDM), and a wide choice of... [03 Jul 2008]
The Right Way to Build Metropolitan Area Networks
White Paper At the same time, Dense Wavelength Division Multiplexing (DWDM) technology has led to a huge increase in the bandwidth available in long-haul backbone networks. All traffic is statistically multiplexed in Layer 2 packets and both directions on the... [03 Jul 2008]
ICI Cancellation Based Channel Estimation for OFDM Systems
White Paper Orthogonal Frequency Division Multiplexing OFDM), which is a multicarrier modulation scheme, splits high data rate information symbols into lower rate parallel data streams and transmits this parallel information on different orthogonal carriers. [11 Apr 2008]
Spatial Multiplexing in Cellular MIMO-CDMA Systems With Linear Receivers: Outage Probability and Capacity
White Paper Spatial multiplexing in particular has been shown to increase the capacity proportionally to the number of transmit antennas in many important cases. In this paper, the effectiveness of spatial multiplexing in the forward link of cellular CDMA... [10 Apr 2008]
Adaptive Resource Allocation in Multiuser OFDM Systems With Proportional Fairness
White Paper Multiuser orthogonal frequency division multiplexing (MU-OFDM) is a promising technique for achieving high downlink capacities in future cellular and wireless LAN systems. The sum capacity of MU-OFDM is maximized when each subchannel is assigned to... [10 Apr 2008]
Multiuser OFDM Capacity Analysis With Partial Channel Information
White Paper This paper studies multiuser orthogonal frequency division multiplexing (OFDM) system using adaptive subchannel and power allocation with partial channel information. The capacity gain using adaptive resource allocation over fixed resource... [10 Apr 2008]
Effective Throughput: A Unified Benchmark for Pilot-Aided OFDM/SDMA Wireless Communication Systems
White Paper This paper studies the uplink performance of an orthogonal frequency division multiplexing (OFDM) wireless system where multiple antennas are utilized at the base station (BS). Further, capacity can be greatly enhanced through spatial division... [10 Apr 2008]
On the Design of Fault-Tolerant Logical Topologies in Wavelength-Routed Networks Supporting Packet Datagrams
White Paper Optical networks exploiting Wavelength Division Multiplexing (WDM) and Wavelength Routing (WR) are promising architectures for the implementation of high-capacity IP infrastructures. Indeed, such networks permit the exploitation of the huge fiber... [29 Oct 2007]
Quality-of-Service Driven Power and Rate Adaptation for Multichannel Communications Over Wireless Links
White Paper In particular, the paper uses multichannel communications to model the conceptual architectures for either diversity or multiplexing systems, which play a fundamental role in physical-layer evolutions of mobile wireless networks. [31 Aug 2007]
Multimode Precoding for MIMO Wireless Systems
White Paper This adaptation is done by varying the number of substreams and the rate of each substream in a precoded spatial multiplexing system. Multiple-Input Multiple-Output (MIMO) wireless systems obtain large diversity and capacity gains by employing... [31 Aug 2007]
Quality-of-Service Driven Power and Rate Adaptation for Multichannel Communications Over Wireless Links
White Paper In particular, the paper uses multichannel communications to model the conceptual architectures for either diversity or multiplexing systems, which play a fundamental role in physical-layer evolutions of mobile wireless networks. [10 Aug 2007]
Multimode Precoding for MIMO Wireless Systems
White Paper This adaptation is done by varying the number of substreams and the rate of each substream in a precoded spatial multiplexing system. Multiple-Input Multiple-Output (MIMO) wireless systems obtain large diversity and capacity gains by employing... [10 Aug 2007]
Packet-Over-SONET/SDH
White Paper Even though SONET/SDH is frequently labeled as "Old World" because it is a time-division multiplexing (TDM) technology optimized for voice traffic, its capability to provide high-bandwidth capacity for transporting data is the primary reason for... [04 Jul 2007]
Interpolation-Based Multi-Mode Precoding for MIMO-OFDM Systems
White Paper Spatial multiplexing with multi-mode precoding provides a means to achieve both high capacity and high reliability in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems. [26 Apr 2007]
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