transmitter
RSS transmitterBuilding Blocks for Mobile Free-Space-Optical Networks
White Paper To ensure uninterrupted data flow, auto-aligning transmitter and receiver modules are necessary. This paper proposes a new optical antenna design that employs spherical antennas covered with transmitter and receiver modules for maintaining optical... [18 Jul 2008]
Anytime Coding on the Infinite Bandwidth AWGN Channel: A Sequential Semi-Orthogonal Code
White Paper This paper shows that it is possible to do this using a semi-orthogonal variation of pulse position modulation that is sequential in nature - bits can be "Streamed out" without having to buffer up blocks of bits at the transmitter. [11 Jul 2008]
Testing Challenges for 10 Gb/S Ethernet Over Twisted-Pair Cabling: New Installation and Testing Guidelines Help Combat Alien Crosstalk (AXTalk)
White Paper The transmitter encodes the digital information, generates the electrical signals to be transmitted and sends these signals on the cabling link. The physical link must be able to transmit the signal from the transmitter to the receiver over the... [08 Jul 2008]
Interpolation Based Unitary Precoding for Spatial Multiplexing MIMO-OFDM With Limited Feedback
White Paper This requires channel state information (CSI) at the transmitter in the form of the precoding matrices for all OFDM subcarriers, which can be achieved using feedback. To reduce the feedback requirements, this paper proposes a new precoding method... [10 Apr 2008]
Link Adaptation in OFDM Systems
White Paper Link Adaptation (LA) is a powerful means of increasing throughput in wireless channels by customizing the transmission rate based on channel state information (CSI) at the transmitter. This paper considers link adaptation in an orthogonal frequency... [10 Apr 2008]
A Partial-DFT-Based OFDM System Resistant to Channel Nulls
White Paper This paper presents a partial DFT-based modified OFDM system that is resistant to channel nulls, when the channel state information is known to both the transmitter and the receiver. It shows the relationship between this method and filterbank... [10 Apr 2008]
Performance of MIMO OFDM Systems in Fading Channels With Additive TX and RX Impairments
White Paper To gain a better understanding of the influence of these impairments on the performance of multiple antenna OFDM systems, this paper studies a zero-forcing based MIMO OFDM system with imperfections modeled as additive error sources in both... [10 Apr 2008]
OFDM Code-Division Multiplexing With Pre-Equalization for Mobile Communications
White Paper While, by applying pre-equalization at the OFDM-CDM transmitter the task of equalization at the receiver can be completely avoided. In this paper, the potential of orthogonal frequency-division multiplexing-code-division multiplexing (OFDM-CDM... [10 Apr 2008]
A Modified Scheme of OFDM Transceiver for Reduction of Its Natural Delay
White Paper This paper also focuses on the packet-type multiple access, in which only one transmitter occupies the channel for a setting time. This paper analyzes the natural processing delay of OFDM systems and proposed two modified functional blocks to... [10 Apr 2008]
Performance of MT-CDMA System With Post-Detection Diversity Reception Over Rician Fading Channel
White Paper Here, the influence of the order of diversity and number of tones is studied for given bandwidth (BW), bit rate and transmitter power. This paper presents the theoretical analysis for Non-coherent multi-tone code division multiple access (MT-CDMA... [10 Apr 2008]
Orthogonal Frequency Division Multiplexing for Wireless Networks
White Paper In this paper, transmitter and receiver were simulated according to the parameters established by the standard, to evaluate the performance and different possibilities in the implementation. Orthogonal frequency division multiplexing (OFDM) is a... [10 Apr 2008]
Peter Cochrane's Blog: Protestors clueless on wireless health risks
Comment Near-field emissions - those that are mainly magnetic field coupling - fall away at a rate of 1/d^6 while the far-field radiation - that is, electro-magnetic waves - die at the slower rate of 1/d^2 where d is the distance from a transmitter. [04 Mar 2008]
Photos: Accenture waves goodbye to the wallet
Photo The technology works by putting an NFC reader and transmitter into a phone that can be linked to a bank, loyalty card system or travel account such as Oyster cards. The SMS is on the wall for crumpled notes and battered leather wallets as Accenture... [31 Jan 2008]
Efficient Collaborative (Viral) Communication in OFDM Based WLANs
White Paper After showing that OFDM can be viewed as a set of parallel Gaussian channels with different frequency gain for each sub-carrier, authors design receiving schemes that exploit both the direct transmission between transmitter and receiver as well as... [23 Jan 2008]
Photos: Driving safety through tech
Photo This shows how the transmitter and receivers interact with each other. The device not only receives data from the transmitter but also sends it to other vehicles up to a certain distance (e.g.m) behind - much like a mesh network. [21 Jan 2008]
