发明名称 |
METHODS AND APPARATUS FOR ADAPTIVE MIMIC REJECTION |
摘要 |
Methods and apparatus for use in aligning frames in a receiver of a data transmission system include checking one or more bit positions associated with a received data stream to determine a number of bits in the bit positions, respectively, that match a predetermined bit pattern. The number for a bit position is compared to a first threshold value and a second threshold value. A bit position is identified as being associated wit h a false framing pattern or mimic when the number is not less than the first threshold value. A bit position is identified as a potential framing bit position or possible framing bit position when the number is not less than the second threshold value. The first threshold valu e is changed when a bit position is identified as a potential framing bit position and another bit position is identified as being associated with a false framing pattern. For example, the first threshold value may be increased by a given value for every frame that a bit position is identified as a potential framing bit position and another bit position is identified as being associated with a false framing pattern. The given value may be a value of one, a value less than one, or a value greater than one. Frame alignment is declared when a bit position is identified as a potential framing bit position and no other bit position is identified as being associated with a false framing pattern.
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申请公布号 |
CA2320540(A1) |
申请公布日期 |
2001.03.27 |
申请号 |
CA20002320540 |
申请日期 |
2000.09.25 |
申请人 |
LUCENT TECHNOLOGIES, INC. |
发明人 |
MITCHELL, JAIME TADEO;WITINSKI, RICHARD C.;BAGHERI, MEHRAN |
分类号 |
H04L1/00;H04J3/06;H04L7/08;(IPC1-7):H04L7/02 |
主分类号 |
H04L1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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