(BER) results at 875 Mbps are achieved with directional antennas.

A 0.35 m 3-level metal CMOS ASIC is developed for forward-backward soft-output detection of Class-IV partial response signaling. The novel, low-complexity architecture uses a difference metric and a computational kernel implemented as a limiter. The chip was verified to operate at 20 MHz (20 Mbps), the highest speed of our IC tester. Simulations predict operation of up to 150 Mbps.

Mannose-binding proteins (MBPs), members of the collectin family, have been implicated as lectin opsonins for various viruses and bacteria. Two distinct but related MBPs, MBP-A and MBP-C, with approximately 55% identity at the amino acid level, have been previously characterized from rodents. In humans, however, only one form of MBP has been characterized. In this paper we report studies elucid...

a r t i c l e i n f o a b s t r a c t In this paper, we show that the Fast broadcasting scheme (L.-S. Juhn and L.-M. Tseng, 1998 [4]), abbreviated the FBR scheme, is also suitable for heterogeneous clients of different communication capabilities although it is originally designed for homogeneous clients of the same bandwidth. Given α channels of total bandwidth α · b Mbps to deliver a video of ...

This work reports an efficient and compact FPGA processor for the SHA-256 algorithm. The novel processor architecture is based on a customdatapath that exploits the reusing ofmodules, having as main component a 4-input Arithmetic-Logic Unit not previously reported. This ALU is designed as a result of studying the type of operations in the SHA algorithm, their execution sequence and the associat...

Status of this Memo This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Abstract MD5 is an authentication algorithm, which has been proposed as the default authentication option in IPv6. When enabled, the MD5 algorithm operates over the entire data packet, including header. This RFC addre...

In IEEE802.11,it is the general case that the further away the stations from the access point (AP), the slower the data rate is to transmit to the AP. With the existing IEEE 802.11 MAC, in the long run all stations end up with the same amount of throughput, no matter if they transmit slow or fast. When one host captures the channel for a long time because its bit rate is low, it penalizes other...

This paper proposes broadband packet wireless access employing Variable Spreading Factor-Orthogonal Frequency and Code Division Multiplexing (VSF-OFCDM) with two-dimensional spreading that prioritizes time domain spreading in the forward link and Multi-carrier/DS-CDMA (MC/DSCDMA) in the reverse link for the system beyond IMT-2000. Based on the wireless access scheme, we propose major radio air ...

This document reports on performance of a splitterless "V/ADSL" system that uses DMT with 4.3125 kHz wide tones over the band from DC to 5 MHz. Asymmetric 26/3.2 Mbps V/ADSL service reaches over 3000 feet, while symmetric service at 6.5 Mbps and 3.2 Mbps reaches are 3000 to 6000 feet for the conventional (or digitally duplexed) DMT. These ranges are maintained even in the presence of bridged-ta...