## Abstract

In this paper, we derive an expression for the signal to interference-plus-noise ratio of a linear multistage parallel interference cancellation receiver. We focus on a linear multistage receiver which converges to the linear minimum mean-squared error receiver as the number of stages increases. The signal to interference-plus-noise ratio is given in terms of the system loading, the partial cancellation factor, the number of stages, and the signal-to-noise ratio. Our expression also allows a simple approximation for the bit error rate at each stage. Finally, we perform a numerical optimization to maximize the signal to interference-plus-noise ratio expression with respect to the partial cancellation factor of the resulting linear multistage receiver.

Original language | English |
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Pages (from-to) | 1778-1786 |

Number of pages | 9 |

Journal | IEEE Transactions on Communications |

Volume | 50 |

Issue number | 11 |

DOIs | |

Publication status | Published - Nov 2002 |

Externally published | Yes |

## Keywords

- Large system analysis
- Linear minimum mean-squared error
- Multiuser detection
- Parallel interference cancellation
- Random spreading