Multiple packet reception in wireless ad hoc networks using polynomial phase-modulating sequences

Orozco-Lugo, A.G.; Lara, M.; McLernon, Des; Muro-Lemus, H.J.

doi:10.1109/tsp.2003.814472

Cited by 33 publications

(21 citation statements)

References 34 publications

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“…Packet separation can be accomplished, for example, endowing the central node with a smart antenna array or by the use of code division multiple access (CDMA). In general, any form of diversity can be used for this task [10]. In other words, diversity creates K "independent" subchannels and each sub-channel can be used by one station to transmit its information to the central node.…”

Section: Network Modelmentioning

confidence: 99%

Multiple Tone Medium Access Control for Wireless Networks with Multiple Packet Reception and Central Control

Orozco-Lugo

Garcia-Ruiz

Lara

2007

Electronics, Robotics and Automotive Mechanics Conference (CERMA 2007)

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This paper introduces a new approach to the multiple access control problem in centralized networks where the central node possesses the so called multiple packet reception capability. The proposed access control protocol called multiple-tone medium-access (MTMA), is based on two disjoint sets of multiple out of band tones. Each tone of the first set has its corresponding pair on the other set. The terminals use a randomly chosen tone from one of the sets to request reservation for transmission of a packet on the following time slot. The paired tones on the other set are employed by the central node to grant the permission for transmission. The throughput of the network is evaluated by simulations. Due to its relative simplicity and good performance, the proposed protocol represents a practical way of exploiting the multiple packet reception capability of the central node.

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Section: Network Modelmentioning

confidence: 99%

Multiple Tone Medium Access Control for Wireless Networks with Multiple Packet Reception and Central Control

Orozco-Lugo

Garcia-Ruiz

Lara

2007

Electronics, Robotics and Automotive Mechanics Conference (CERMA 2007)

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“…However, MPR often requires receivers that are capable of advanced signal processing. For example, by means of a polynomial phase-modulating sequence, the cyclostationarity of different received packets was used to color-code packets from multiple transmissions [4]. Signal † A. F. Molisch is also at Lund University, Sweden. separation was achieved in [6] using a rotational invariance technique.…”

Section: Introductionmentioning

confidence: 99%

Efficient Multiple Access Using Received Signal Strength and Local Channel Information

Yim

Mehta²,

Molisch³

et al. 2008

2008 IEEE Wireless Communications and Networking Conference

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Contention-based multiple access is a crucial component in many wireless systems. It is known that using interference cancellation techniques to receive and decode multiple packets that arrive simultaneously can improve the efficiency of multiple access. However, such multi-packet reception (MPR) schemes proposed in the literature require complex receivers capable of performing advanced signal processing over significant amounts of soft undecodable information received over multiple contention steps. In this paper, we show that local channel knowledge and elementary received signal strength measurements, which are made by many receivers today, can actively facilitate multipacket reception and even simple algorithm called Turbo-Dual Power Multiple Access (Turbo-DPMA) that uses local channel knowledge to limit the receive power levels to two discrete values that are carefully chosen to facilitate successive interference cancellation. As we shall see, limiting the receive power in such a manner not only facilitates the simultaneous reception of up to two packets, but it also enables the receiver to derive additional useful information about the contending users from its received signal strength indicator. The resulting receiver structure is markedly simpler, as it needs to process only the immediate received signal, without having to store and process signals received previously. Even more remarkably, the Turbo-DPMA is stable for packet arrival rates as high as 0.793 packets/slot, which is better than all the contention algorithms known to date. IEEE Wireless Communications and Networking ConferenceThis work may not be copied or reproduced in whole or in part for any commercial purpose. Permission to copy in whole or in part without payment of fee is granted for nonprofit educational and research purposes provided that all such whole or partial copies include the following: a notice that such copying is by permission of Mitsubishi Electric Research Laboratories, Inc.; an acknowledgment of the authors and individual contributions to the work; and all applicable portions of the copyright notice. Copying, reproduction, or republishing for any other purpose shall require a license with payment of fee to Mitsubishi Electric Research Laboratories, Inc. All rights reserved. Abstract-Contention-based multiple access is a crucial component in many wireless systems. It is known that using interference cancellation techniques to receive and decode multiple packets that arrive simultaneously can improve the efficiency of multiple access. However, such multi-packet reception (MPR) schemes proposed in the literature require complex receivers capable of performing advanced signal processing over significant amounts of soft undecodable information received over multiple contention steps. In this paper, we show that local channel knowledge and elementary received signal strength measurements, which are made by many receivers today, can actively facilitate multipacket reception and even simplify the interference canceling re...

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“…Stochastic techniques such as "transmitter induced cyclostationarity," initially derived for single user blind equalization [14]- [16] have recently been extended to multiuser convolutive channels [17] and orthogonal frequency-division multiplexing (OFDM) [18]. A deterministic version of such a technique, using phase modulation codes, was proposed for source separation in MANETs [19] (this paper relates to several ideas proposed in [1] and also offers a throughput analysis which, therefore, we omit here). Another example of a deterministic source separation technique is [20], but it needs multiple transmit antennas per source (spatial redundancy).…”

Section: Introductionmentioning

confidence: 99%

Synchronization and packet separation in wireless ad hoc networks by known modulus algorithms

2005

IEEE J. Select. Areas Commun.

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Abstract-In mobile asynchronous ad hoc networks, multiple users may transmit packets at the same time. If a collision occurs, then in current systems both packets are lost and need to be retransmitted, reducing the overall throughput. To mitigate this, we consider to extend the receiver with a small antenna array, so that it can suppress interfering signals. To characterize the signal of interest, we propose to modulate it at the symbol rate by a known amplitude variation. This allows the corresponding multichannel receiver to estimate the beamformer weights that will suppress the interfering sources. We introduce "known modulus algorithms" to achieve this. We also derive synchronization algorithms to estimate the offset of the desired packet in an observation window, among interfering data packets. The algorithms are illustrated via simulations.Index Terms-Ad hoc networks, blind source separation, known modulus algorithm (KMA), packet offset estimation, synchronization.

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Multiple packet reception in wireless ad hoc networks using polynomial phase-modulating sequences

Cited by 33 publications

References 34 publications

Multiple Tone Medium Access Control for Wireless Networks with Multiple Packet Reception and Central Control

Multiple Tone Medium Access Control for Wireless Networks with Multiple Packet Reception and Central Control

Efficient Multiple Access Using Received Signal Strength and Local Channel Information

Synchronization and packet separation in wireless ad hoc networks by known modulus algorithms

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