A Cooperative Diversity-Based Robust Mac Protocol In Wireless Ad Hoc Networks


In interference-rich and noisy environment, wireless communication is often hampered by unreliable communication links. Recently, there has been active research on cooperative communication that improves the communication reliability by having a collection of radio terminals transmit signals in a cooperative way. This paper proposes a medium access control (MAC) algorithm, called Cooperative Diversity MAC (CD-MAC), which exploits the cooperative communication capability of the physical (PHY) layer to improve robustness in wireless ad hoc networks. In CD-MAC, each terminal proactively selects a partner for cooperation and lets it transmit simultaneously so that this mitigates interference from nearby terminals and thus improves the network performance. For practicability, CD-MAC is designed based on the widely adopted 802.11 MAC. For accurate evaluation, this study presents and uses a realistic reception model by taking bit error rate (BER), derived from Intersil HFA3861B radio hardware, and the corresponding frame error rate (FER) into consideration. System-level simulation study shows that CD-MAC significantly outperforms the original 802.11 MAC in terms of packet delivery ratio and end-to-end delay.

Posted by on May 11th, 2011 and filed under NS2 Projects, Parallel Distributed System. You can follow any responses to this entry through the RSS 2.0. You can leave a response by filling following comment form or trackback to this entry from your site

1 Response for “A Cooperative Diversity-Based Robust Mac Protocol In Wireless Ad Hoc Networks”

  1. rakesh prajapati says:

    pls send basepaper as soon as early

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