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首页> 外文会议>Global Telecommunications Conference, 2003. GLOBECOM '03. IEEE >Single antenna interference cancellation: iterative semiblind algorithm and performance bound for joint maximum-likelihood interference cancellation
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Single antenna interference cancellation: iterative semiblind algorithm and performance bound for joint maximum-likelihood interference cancellation

机译：单天线干扰消除：迭代半盲算法和联合最大似然干扰消除的性能界限

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摘要

In the first part, an iterative receiver for joint channel estimation and cochannel interference cancellation suitable for time-division multiple-access (TDMA) cellular radio systems is proposed. The receiver is based on joint maximum-likelihood sequence estimation (JMLSE). It is blind with respect to the data of the interfering users but training-based with respect to the data of the desired user and is therefore referred to as semiblind. As opposed to concurrent receiver structures where the number of receiving antennas must exceed the number of cochannel interferers, the proposed receiver is suitable for just one receive antenna. No knowledge on the burst structure of the interferer is used. Hence, the proposed receiver is suitable for (but not restricted to) the downlink in asynchronous networks. The proposed receiver is able to operate at a signal/interference ratio of 0 dB in asynchronous GSM/GPRS networks given a single dominating interferer. Furthermore, the results indicate that with proper interference cancellation it is not necessary to synchronize GSM/GPRS networks. In the second part, a lower bound on the bit error probability for joint maximum-likelihood sequence estimation in the presence of cochannel interference (CCI) and intersymbol interference (ISI) is presented. This lower bound is valid for an arbitrary number of interferers.
机译：在第一部分中，提出了一种适用于时分多址（TDMA）蜂窝无线系统的，用于联合信道估计和同信道干扰消除的迭代接收机。接收器基于联合最大似然序列估计（JMLSE）。它相对于干扰用户的数据是盲目的，而相对于所需用户的数据是基于训练的，因此被称为半盲。与接收天线的数量必须超过同信道干扰源的数量的并发接收器结构相反，所提出的接收器仅适用于一个接收天线。没有使用关于干扰源的突发结构的知识。因此，提出的接收机适合于（但不限于）异步网络中的下行链路。在给定一个主要干扰源的情况下，建议的接收器能够在异步GSM / GPRS网络中以0 dB的信号/干扰比工作。此外，结果表明，通过适当的干扰消除，无需同步GSM / GPRS网络。在第二部分中，给出了在存在共信道干扰（CCI）和符号间干扰（ISI）的情况下用于联合最大似然序列估计的误码概率的下限。此下限对任意数量的干扰源有效。

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