Spatial Multiplexing in Random Wireless Networks

Abstract

We consider a network of transmitters, each with a receiver at a fixed distance, and locations drawn independently according to a homogeneous Poisson Point Process (PPP). The transmitters and the receivers are equipped with multiple antennas. Under a channel model that includes Rayleigh fading and path-loss, and an outage model for packet successes, we examine the performance of various spatial multiplexing techniques, namely zero-forcing (ZF), ZF with successive interference cancellation (ZFSIC or VBLAST) and DBLAST. In each case, we determine the number of streams that maximizes the transmission capacity, defined as the maximum network throughput per unit area such that a constraint on the outage probability is satisfied. Numerical results showcase the benefit of DBLAST over ZF and VBLAST in terms of the transmission capacity. In all cases, the transmission capacity scales linearly in the number of antennas.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2009
Accession Number
ADA515877

Entities

People

  • James R. Zeidler
  • John G. Proakis
  • Kostas Stamatiou

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ad Hoc Networks
  • Antennas
  • California
  • Frequency Agility
  • Information Operations
  • Mesh Networks
  • Multiple Access
  • Multiple Input Multiple Output
  • Multiplexing
  • Network Topology
  • Networks
  • Probability
  • Random Variables
  • Scaling Laws
  • Sensor Networks
  • Throughput
  • Wireless Networks

Fields of Study

  • Engineering

Readers

  • Radio communications and signal processing.
  • Regression Analysis.