K. Medepalli

Publications15
h-index9
Citations748
Highly Influential Citations61
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Towards Performance Modeling of IEEE 802.11 Based Wireless Networks: A Unified Framework and Its Applications
TLDR
We present a simple analytical model for IEEE 802.11 based wireless networks that effectively captures the important network performance characteristics such as throughput, delay and fairness. Expand
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Voice capacity of IEEE 802.11b, 802.11a and 802.11g wireless LANs
TLDR
This paper presents new analytical and simulation results for the conversational speech capacity of WLANs and compares the different WLAN technologies in that regard. Expand
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Receive antenna selection in MIMO systems using convex optimization
TLDR
We present a low complexity approach to receive antenna selection for capacity maximization, based on the theory of convex optimization. Expand
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TCP performance over cdma2000 RLP
TLDR
This paper provides performance results for TCP over cdma2000 radio link protocol (RLP). Expand
  • 52
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Throughput analysis of IEEE 802.11 wireless LANs using an average cycle time approach
TLDR
We show that a notion of average cycle time exists in DCF access where by all stations, on average, successfully transmit one packet in a cycle. Expand
  • 73
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System centric and user centric queueing models for IEEE 802.11 based wireless LANs
TLDR
We consider the following two views of an IEEE 802.11 based Wireless LAN: (i) as seen by the WLAN medium and (ii)as seen by a user. In the system centric view, we model the W LAN medium as a server that allocates its resources to users in a round Robin manner. This resource sharing model not only provides a simple model for the system, it also enables us to derive the channel service rate and the total delay incurred in transmitting a packet. Expand
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On Optimization of CSMA/CA based Wireless LANs: Part I - Impact of Exponential Backoff
TLDR
In this paper, we show that the joint optimization of initial contention window (CWmin) and the number of backoff stages in BEB yields, interestingly, no additional gains over a simple CWmin optimization that is performed by considering that BEB is absent. Expand
  • 49
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Throughput Analysis of a Path in an IEEE 802.11 Multihop Wireless Network
TLDR
In this paper, we present a methodology to analytically compute end-to-end throughput that can be achieved on a path between two nodes in an IEEE 802.11 multihop wireless network with homogenous data transmission rates. Expand
  • 40
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Wireless Internet Access Using IS-2000 Third Generation System: A Performance and Capacity Study
TLDR
In this paper, we evaluate the performance and capacity of a 3G wireless data system based on IS-2000 standard based on multi-cell simulations. Expand
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On Optimization of CSMA/CA based Wireless LANs: Part II - Mitigating Efficiency Loss
TLDR
We propose using multiple channels to improve the throughput of high data rate users. Expand
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