An overview is given of the new IEEE 802.11n standard. This is the first wireless LAN standard based on MIMO-OFDM, a technique pioneered by Airgo Networks to give a significant performance increase in both range and rate relative to conventional wireless LAN. Performance results show that net user throughputs over 100 Mbps are achievable, which is about four times larger than the maximum achiev...

We present a study that quantifies the effect of cold temperature on smartphone input performance, particularly on tapping tasks. Our results show that smartphone input performance decreases when completing tapping tasks in cold temperatures. We show that colder temperature is associated with lower throughput and less accurate performance when using the phone in both one-handed and two-handed o...

Spatially-correlated intra-die process variations cause significant core-to-core frequency variations in chip-multiprocessors. An analytical model of chip-multiprocessor throughput is extended to model designs using frequency islands. The improved variabilitytolerance of such designs over globally-clocked ones is quantified across a range of core counts and sizes under constant die area. The be...

With the ratification of the IEEE 802.11ad amendment to the 802.11 standard in December 2012, a major step has been taken to bring consumer wireless communication to the millimeter wave (mm-Wave) band. However, multi-Gbps throughput and small interference footprint come at the price of adverse signal propagation characteristics and require a fundamental rethinking of Wi-Fi communication princip...

The Available Bit Rate (ABR) service has been shown to enable persistent, greedy data sources to e ciently utilize ATM network resources. However, the throughput for bursty TCP over ABR data tra c in the presence of interfering tra c may not be as good as for persistent ABR sources without interfering tra c. This paper shows that in a comparison of rate based ABR schemes (EPRCA and ERICA) and a...

In reliable multicast communications, data packets are disseminated to all receivers in a multicast group. Generally, end-to-end congestion control adjusts transmission rate of the sender to the node of the lowest throughput in a multicast group. In this situation, when a multicast group includes receivers of significantly low throughput, lots of receivers suffer throughput degradation due to e...

Wireless local area networks (WLANs) based on the IEEE 802.11 standards has been successfully deployed in a variety of home, office and corporate environments and available in various flavors like 802.11a/b/g. In this paper indepth analysis of the throughput performance and bandwidth efficiency of 802.11a standard has been investigated and compared for CSMA/CA and RTS/CTS schemes. In this paper...

Streaming of gastrointestinal contents depends on the demonstration of differential rates of recovery of equal doses of two synchronously fed markers. There was no significant difference in the rate of throughput of polyethylene glycol (a liquid phase marker) and chromium sesquioxide (a solid phase marker) in healthy volunteers (n = 7) and hospital inpatients (n = 5) with normal bowel habit, so...

—In order to evaluate the throughput performance of DCF about both ultra-rate and longtime delay wireless local area network (WLAN) based on Orthogonal Frequency Division Multiplexing (OFDM) modulation channel, this paper analyzes the operating principle of DCF and the throughput of system on the basis of two-dimensional Markov Model. Through theoretical analysis of the relationship among 802....

This paper presents a novel high-speed, lowcomplexity 128/64-point radix-24 FFT/IFFT processor for the applications in a high-throughput MIMO-OFDM systems. The high radix radix-24 multi-path delay feed-back (MDF) FFT architecture provides a higher throughput rate and low hardware complexity by using a four-parallel data-path scheme. The proposed processor not only supports the operation of FFT/...