WO2012109817A1 - 译码可靠性判断方法及装置 - Google Patents

译码可靠性判断方法及装置 Download PDF

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Publication number
WO2012109817A1
WO2012109817A1 PCT/CN2011/073193 CN2011073193W WO2012109817A1 WO 2012109817 A1 WO2012109817 A1 WO 2012109817A1 CN 2011073193 W CN2011073193 W CN 2011073193W WO 2012109817 A1 WO2012109817 A1 WO 2012109817A1
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data
decoded
reliability
reliability factor
average power
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PCT/CN2011/073193
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English (en)
French (fr)
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张娜
李萍
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中兴通讯股份有限公司
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Publication of WO2012109817A1 publication Critical patent/WO2012109817A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045Arrangements at the receiver end

Definitions

  • the present invention relates to the field of communications, and in particular to a decoding reliability determination method and apparatus.
  • LTE Long Term Evolution
  • LTE technology With the development of LTE technology, more and more leading global operators have adopted LTE as the future direction of network evolution, and equipment manufacturers have increased their investment in LTE, which has promoted the continuous advancement of LTE.
  • LTE Compared with 3G, LTE has the following technical features: (1) The communication rate is increased, the downlink peak rate is 100Mbps, and the upper behavior is 50Mbps; (2) the spectrum efficiency is improved; (3) the QoS (Quality of Service) guarantee, Guarantee the quality of service of real-time services (such as VoIP) through system design and strict QoS mechanism; (4) Reduce the delay of the wireless network, the subframe length is 0.5ms and 0.675ms, which solves the problem of backward compatibility and reduces the network. (5) Increasing the cell boundary bit rate, increasing the cell boundary bit rate and the like while maintaining the current base station position unchanged.
  • QoS Quality of Service
  • the physical channel of the LTE system mainly includes a traffic channel and a control channel, where the feedback information ACK/NACK for the downlink traffic channel is in the uplink control channel PUCCH (Physical Uplink Control Channel, PUCCH) or the uplink traffic channel PUSCH (Physical Uplink Shared Channel, referred to as PUSCH) transmission; Channel Quality Indication (CQI) is also transmitted on the PUCCH or PUSCH.
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • CQI Channel Quality Indication
  • the decoded information is not necessarily the information sent by the transmitting end.
  • the cyclic redundancy check bit can be used to judge whether the decoded information is correct, but if there is no check bit for the control information to determine whether the decoding is correct, then the receiving end determines whether the decoded control information is reliable. It is a key issue.
  • the control information there are many schemes for decoding at the receiving end. One of the common ones is: The receiving end decodes the transmitting end according to the maximum peak value by seeking the relevant operation (ie, through correlation operation). The message sent.
  • a primary object of the present invention is to provide a method and apparatus for determining decoding reliability to solve at least the above problem of determining whether the decoded information is reliable or effective.
  • a decoding reliability judging method including: performing correlation operations on data to be decoded, and outputting decoded data, maximum peak value and sub-peak value after correlation operation; The sub-peak and the average power of the data to be decoded are used to calculate a reliability factor; the reliability factor is compared with a preset threshold, and the reliability of the decoded data is determined according to the comparison result.
  • the method before calculating the reliability factor according to the maximum peak value and the second peak value and the average power of the data to be decoded, the method further comprises: calculating an average power of the data to be decoded.
  • the average power is calculated as:
  • the reliability factor is the maximum peak and SecPe is the secondary peak. In the case where sub-peaks are not easily obtained, the reliability factor can also be calculated using only the peak and the average power of the data to be decoded:
  • the reliability factor is compared with a preset threshold, and the reliability of the decoded data is determined according to the comparison result, including: comparing the reliability factor with the threshold, and if the reliability factor is greater than or equal to the threshold, determining the translation The code data is reliable; otherwise, it is determined that the decoded data is unreliable.
  • a decoding reliability judging apparatus including: a correlation operation module configured to perform correlation operations on data to be decoded, and output decoded data, maximum peak sum after correlation operation a secondary factor; a reliability factor calculation module configured to calculate a reliability factor based on a maximum peak value and a secondary peak value and an average power of the data to be decoded; a reliability determination module configured to compare the reliability factor with a preset threshold value, Determining the reliability of the decoded data based on the comparison result Sex.
  • the decoding reliability determining apparatus further comprises: a power calculating module configured to calculate an average power of the data to be decoded.
  • the average power is calculated as:
  • the reliability factor is the maximum peak and SecPe is the secondary peak. In the case where sub-peaks are not easily obtained, the reliability factor can also be calculated using only the peak and the average power of the data to be decoded:
  • the reliability judging module is further configured to: compare the reliability factor with the threshold, and if the reliability factor is greater than or equal to the threshold, determine that the decoded data is reliable; otherwise, determine that the decoded data is unreliable.
  • the maximum peak value and the second peak value after the correlation calculation are used to further judge the reliability of the decoded data, and the reliability judgment problem of the decoded information is solved, thereby ensuring reliable and effective decoded information.
  • FIG. 1 is a flow chart of a method for determining decoding reliability according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a device for determining decoding reliability according to an embodiment of the present invention
  • FIG. 1 is a flowchart of a method for determining decoding reliability according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102, performing correlation operations on data to be decoded, and outputting related operations. Decoded data, maximum peak and sub-peak.
  • Step S104 calculating a reliability factor according to the maximum peak value and the second peak value and the average power of the data to be decoded.
  • Step S106 comparing the reliability factor with a preset threshold, and determining the reliability of the decoded data according to the comparison result.
  • the reliability of the decoded data is further judged by using the maximum peak value and the second peak value after the correlation operation, and the reliability judgment problem of the decoded information is solved, thereby ensuring the reliability of the decoded information. effective.
  • the method further includes: calculating an average power of the data to be decoded, where the average power is calculated as: aJ 2 , where Pow is the average of the data to be decoded Power, which is the data to be decoded, N is the length of the data.
  • step S104 the calculation formula of the reliability factor is: D ⁇ d Peak 2
  • / is the reliability factor
  • the maximum peak is the reliability factor
  • SecPe is the secondary peak.
  • step S104 the reliability factor is compared with a threshold, and if the reliability factor is greater than or equal to the threshold, it is determined that the decoded data is reliable; otherwise, it is determined that the decoded data is unreliable.
  • 2 is a schematic diagram of a decoding device for decoding reliability according to an embodiment of the present invention.
  • the device includes: a correlation operation module 10, a reliability factor calculation module 20, and a reliability determination module 30.
  • the correlation operation module 10 is configured to perform correlation operations on the data to be decoded, and output the decoded data, the maximum peak value and the second peak value after the correlation operation; the reliability factor calculation module 20 is configured to be based on the maximum peak value and the second peak value.
  • the reliability determination module 30 is configured to compare the reliability factor with a preset threshold, and determine the reliability of the decoded data according to the comparison result.
  • the reliability of the decoded data is further judged by using the maximum peak value and the second peak value after the correlation operation, and the reliability judgment problem of the decoded information is solved, thereby ensuring the reliability of the decoded information. effective.
  • the average power of the code data is the data to be decoded, and N is the length of the data.
  • the dependency factor is the maximum peak and SecPe is the secondary peak.
  • the reliability factor can also be calculated using only the peak and the average power of the data to be decoded:
  • the reliability judgment process of the reliability judging module 30 is: comparing the reliability factor with the threshold, if the reliability factor is greater than or equal to the threshold, determining that the decoded data is reliable; otherwise, determining that the decoded data is not reliable.
  • Embodiment 1 In the LTE system, when the feedback information HAQR-ACK is in the multiplexing mode and is multiplexed on the uplink traffic channel, if the number of bits of the feedback information is greater than 2 bits, then the information bit will be at the originating end. RM Use RM code, correspondingly need to carry out RM on the feedback information transmitted at the receiving end Decoding.
  • FIG. 3 is a schematic diagram of a method for determining decoding reliability according to the first embodiment of the present invention. As shown in FIG. 3, the following steps are included: Step S302: Calculating data to be sent to the RM decoding module (a ⁇ .., a N , where N is the average power P of the length of the data, and the specific formula is: ⁇
  • Step S304 after performing RM decoding on the data sent to the correlation operation module, outputting the decoded data, where J is the length of the decoded data, and outputting the maximum peak Peak and the second peak SecPeak obtained in the RM decoding process.
  • Step S306 calculating the reliability factor /) by using the maximum peak value and the secondary peak value SecPe and the data average power p ow of step S302.
  • the specific calculation formula is as follows:
  • Pow step S308 comparing the reliability factor /) with a given threshold t/w ⁇ /?, if /) is greater than or equal to a given threshold thresh, then the decoded data is considered to be HARQ-ACK information; otherwise, the origin is not considered Send HARQ-ACK information.
  • Embodiment 2 In the LTE system, when channel quality information is transmitted on the uplink control channel, the channel quality information bit is encoded by RM at the originating end, and correspondingly, the receiving end needs to perform RM decoding on the received information to obtain channel quality. information.
  • FIG. 4 is a schematic diagram of a method for determining decoding reliability according to Embodiment 2 of the present invention, as shown in FIG.
  • Step S402 Calculate the average power P of the data (atti..., a N , where N is the length of the data) to be sent to the RM decoding module, and the specific calculation formula is:
  • Step S404 after performing RM decoding on the data sent to the correlation operation module, outputting the decoded data, where J is the length of the decoded data, and outputting the maximum peak Peak and the second peak SecPeak obtained in the RM decoding process.
  • Pow can also use only the peak and the average power of the data to be decoded without easily obtaining the sub-peak.
  • the decoded data after performing the correlation operation operation is the largest after the correlation operation
  • the peak and the second peak further determine the reliability of the decoded data, and solve the reliability judgment problem of the information decoded in the prior art, thereby ensuring the reliable and effective information of the decoded information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明提供了一种译码可靠性判断方法及装置,该方法包括:对需译码的数据进行相关运算,并输出相关运算后的译码数据、最大峰值和次峰值;根据最大峰值和次峰值以及需译码的数据的平均功率计算可靠性因子;将可靠性因子与预设的阈值进行比较,根据比较结果确定译码数据的可靠性。通过本发明,采用相关运算后的最大峰值和次峰值来进一步判断译码数据的可靠性,解决了译码出的信息的可靠性判断问题,从而保证了译码出的信息的可靠有效。

Description

译码可靠性判断方法;^置 技术领域 本发明涉及通信领域,具体而言, 涉及一种译码可靠性判断方法及装置。 背景技术 LTE ( Long Term Evolution, 长期演进) 一直受到移动通信产业的青睐。 随着 LTE技术的发展,越来越多的全球领先运营商纷纷将 LTE作为网络面向 未来的演进方向, 设备制造商也纷纷加大了在 LTE领域的投入, 从而推动了 LTE的不断前进。 与 3G相比, LTE具有以下的技术特征: ( 1 ) 通信速率提 高, 下行峰值速率为 100Mbps、 上行为 50Mbps; ( 2 ) 频谱效率提高; (3 ) QoS ( Quality of Service, 服务质量)保证, 通过系统设计和严格的 QoS机制 保证实时业务(如 VoIP )的服务质量; ( 4 )降低无线网络时延,子帧长度 0.5ms 和 0.675ms, 解决了向下兼容的问题, 并降氐了网络时延; (5 ) 增加了小区 边界比特速率,在保持目前基站位置不变的情况下增加小区边界比特速率等。
LTE系统的物理信道主要包括业务信道和控制信道, 其中对于下行业务 信道的反馈信息 ACK/NACK 在上行控制信道 PUCCH ( Physical Uplink Control Channel, 简称 PUCCH )或者上行业务信道 PUSCH ( Physical Uplink Shared Channel, 简称 PUSCH )上传输; 信道质量信息 CQI ( Channel Quality Indication, 简称 CQI ) 也是在 PUCCH或者 PUSCH上进行传输的。 目前, 对于控制信息, 在接收端没有判断正确还是错误的策略。 如果接收端译码出 的控制信息有错误,可能会引起 MAC ( Media Access Control,介质访问控制) 层调度错误等问题, 进而可能导致系统吞吐量下降。 在信号处理过程中, 接收端需要译码出发送端的信息。 由于信道衰落, 时偏频偏等因素的存在, 译码出的信息并不一定是发送端所发送的信息。 对 于业务信道可以通过循环冗余校验位来判断译码出的信息是否正确, 但是对 于控制信息没有校验位来判断译码是否正确, 那么接收端对译码出的控制信 息如何判断是否可靠是一个关键的问题。 对于控制信息, 接收端译码的方案有很多, 其中常见的一种是: 接收端 通过求相关的操作 (即通过相关运算), 然后根据最大的峰值来译码发送端所 发送的信息。 那么对于求相关的译码方案, 如何判断译码出的信息是否可靠 有效, 目前尚未提出有效的解决方案。 发明内容 本发明的主要目的在于提供一种译码可靠性的判断方法及装置, 以至少 解决上述如何判断译码出的信息是否可靠有效的问题。 根据本发明的一个方面, 提供了一种译码可靠性判断方法, 包括: 对需 译码的数据进行相关运算, 并输出相关运算后的译码数据、 最大峰值和次峰 值; 根据最大峰值和次峰值以及需译码的数据的平均功率计算可靠性因子; 将可靠性因子与预设的阈值进行比较,根据比较结果确定译码数据的可靠性。 优选地, 根据最大峰值和次峰值以及需译码的数据的平均功率计算可靠 性因子之前, 还包括: 计算需译码的数据的平均功率。 优选地, 平均功率的计算公式为: | α 2 , 其中, Pow为需 ίψ
Figure imgf000003_0001
码的数据的平均功率, A为需译码的数据, N为数据的长度。
优选地, 可靠性因子的计算公式为: D = Peakl _SecPeakl , 其中, 为
Pow
可靠性因子, 为最大峰值, SecPe 为次峰值。 在不容易获得次峰值的 情况下, 也可以仅用峰值和需译码的数据的平均功率计算可靠性因子:
D _ Peak2
Pow 优选地, 将可靠性因子与预设的阈值进行比较, 根据比较结果确定译码 数据的可靠性, 包括: 将可靠性因子与阈值进行比较, 如果可靠性因子大于 或等于阈值, 则确定译码数据是可靠的; 否则, 则确定译码数据不可靠。 根据本发明的另一方面, 提供了一种译码可靠性判断装置, 包括: 相关 运算模块, 设置为对需译码的数据进行相关运算, 并输出相关运算后的译码 数据、 最大峰值和次峰值; 可靠性因子计算模块, 设置为根据最大峰值和次 峰值以及需译码的数据的平均功率计算可靠性因子; 可靠性判断模块, 设置 为将可靠性因子与预设的阈值进行比较, 根据比较结果确定译码数据的可靠 性。 优选地, 译码可靠性判断装置还包括: 功率计算模块, 设置为计算需译 码的数据的平均功率。 优选地, 平均功率的计算公式为: | α 2 , 其中, Pow为需 ίψ
Figure imgf000004_0001
码的数据的平均功率, A为需译码的数据, N为数据的长度。
优选地, 可靠性因子的计算公式为: D = "UK _ w , 其中, 为
Pow
可靠性因子, 为最大峰值, SecPe 为次峰值。 在不容易获得次峰值的 情况下, 也可以仅用峰值和需译码的数据的平均功率计算可靠性因子:
D _ Peak2
Pow 优选地, 可靠性判断模块还设置为: 将可靠性因子与阈值进行比较, 如 果可靠性因子大于或等于阈值, 则确定译码数据是可靠的; 否则, 则确定译 码数据不可靠。 通过本发明, 釆用相关运算后的最大峰值和次峰值来进一步判断译码数 据的可靠性, 解决了译码出的信息的可靠性判断问题, 从而保证了译码出的 信息的可靠有效。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是根据本发明实施例的译码可靠性的判断方法流程图; 图 2是根据本发明实施例的译码可靠性的判断装置示意图; 图 3是才艮据本发明实施例一的译码可靠性的判断方法示意图; 以及 图 4是 居本发明实施例二的译码可靠性的判断方法示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 图 1是根据本发明实施例的译码可靠性的判断方法流程图,如图 1所示, 包括以下步 4聚: 步骤 S 102 , 对需译码的数据进行相关运算, 并输出相关运算后的译码数 据、 最大峰值和次峰值。 步骤 S 104,根据最大峰值和次峰值以及需译码的数据的平均功率计算可 靠性因子。 步骤 S 106 , 将可靠性因子与预设的阈值进行比较, 根据比较结果确定译 码数据的可靠性。 在上述方法中, 通过釆用相关运算后的最大峰值和次峰值来进一步判断 译码数据的可靠性, 解决了译码出的信息的可靠性判断问题, 从而保证了译 码出的信息的可靠有效。 其中, 在步骤 S 104 之前, 还包括: 计算需译码的数据的平均功率, 平 均功率的计算公式为: aJ2 , 其中, Pow为需译码的数据的平均
Figure imgf000005_0001
功率, 为需译码的数据, N为数据的长度。
其中,在步骤 S 104中,可靠性因子的计算公式为: D ^d Peak2
Figure imgf000005_0002
其中, /)为可靠性因子, 为最大峰值, SecPe 为次峰值。 在不容易获 得次峰值的情况下, 也可以仅用峰值和需译码的数据的平均功率计算可靠性 因子: /) = £ P^eak2
Pow 其中, 在步骤 S 104 中, 将可靠性因子与阈值进行比较, 如果可靠性因 子大于或等于阈值, 则确定译码数据是可靠的; 否则, 则确定译码数据不可 靠。 图 2是才艮据本发明实施例的译码可靠性的判断装置示意图,如图 2所示, 该装置包括: 相关运算模块 10、 可靠性因子计算模块 20和可靠性判断模块 30。 其中, 相关运算模块 10 , 设置为对需译码的数据进行相关运算, 并输出 相关运算后的译码数据、 最大峰值和次峰值; 可靠性因子计算模块 20 , 设置 为根据最大峰值和次峰值以及需译码的数据的平均功率计算可靠性因子; 可 靠性判断模块 30 , 设置为将可靠性因子与预设的阈值进行比较, 根据比较结 果确定译码数据的可靠性。 在上述装置中, 通过釆用相关运算后的最大峰值和次峰值来进一步判断 译码数据的可靠性, 解决了译码出的信息的可靠性判断问题, 从而保证了译 码出的信息的可靠有效。 其中, 上述装置还包括功率计算模块, 功率计算模块设置为计算需译码 的数据的平均功率, 平均功率的计算公式为: 尸0^ =丄 2 I at |2 , 其中, Pow为 需译码的数据的平均功率, 为需译码的数据, N为数据的长度。
其中, 可靠性因子的计算公式为: D = "UK _ w , 其中, 为可
Pow
靠性因子, 为最大峰值, SecPe 为次峰值。 在不容易获得次峰值的情 况下, 也可以仅用峰值和需译码的数据的平均功率计算可靠性因子:
D _ Peak2
Pow 其中, 可靠性判断模块 30 的可靠性判断过程为: 将可靠性因子与阈值 进行比较, 如果可靠性因子大于或等于阈值, 则确定译码数据是可靠的; 否 则, 则确定译码数据不可靠。 实施例一 在 LTE系统中, 当反馈信息 HAQR-ACK为复用模式, 并且是复用在上 行业务信道上时, 如果反馈信息的比特数大于 2比特时, 那么在发端则是对 信息比特会釆用 RM编码, 相应的在接收端需要对传输的反馈信息进行 RM 译码。 因为发端可能发送反馈信息, 也可能不发送反馈信息, 因此需要接收 端对 RM ( Reed-Muller )译码后的 HAQR-ACK数据进行可靠性判断, 如果 判为可靠, 则认为发端确实发送了 HAQR-ACK; 如果判为不可靠, 则认为 发端没有发送 HAQR-ACK。 图 3是根据本发明实施例一的译码可靠性的判 断方法示意图, 如图 3所示, 包括以下步 4聚: 步骤 S302 , 计算待送入 RM译码模块的数据 ( a^ .., aN , 其中 N为数据 的长度) 的平均功率 P , 具体计算公式为: Ι |2
Figure imgf000007_0001
步骤 S304 , 对送入相关运算模块的数据 进行 RM译码后, 输出 译码数据 , 其中 J为译码数据的长度, 并且输出 RM译码过程中得到 的最大峰值 Peak和次峰值 SecPeak。 步骤 S306 , 利用最大峰值 和次峰值 SecPe 以及步骤 S302 的数据 平均功率 pow , 计算可靠性因 子 /) , 具体的计算公式如下:
D = Peak2 - SecPeak2。 在不容易获得次峰值的情况下, 也可以仅用峰值和需
Pow 译码的数据的平均功率计算可靠性因子: D
Pow 步骤 S308 , 将可靠性因子 /)和给定阈值 t/w^/?进行比较, 如果 /)大于等 于给定阈值 thresh , 则认为译码数据确实是 HARQ-ACK信息; 否则认为发端 并没有发送 HARQ-ACK信息。 实施例二 在 LTE系统中, 当在上行控制信道上传输信道质量信息时, 在发端则是 对信道质量信息比特釆用 RM 编码, 相应的在接收端需要对接收信息进行 RM译码得到信道质量信息。 因为对于信道质量信息是进行平滑滤波的, 即 通过加权的方式利用历史值来平滑当前译码出的信道质量信息, 如果当前译 码出的信息可靠, 那么可以加大当前译码信息的权重; 如果当前译码出的信 息不可靠, 那么可以减小当前译码信息的权重。 通过判断当前译码信息的可 靠性, 图 4是 居本发明实施例二的译码可靠性的判断方法示意图, 如图 4 所示, 包括以下步 4聚: 步骤 S402, 计算待送入 RM译码模块的数据 ( „...,aN , 其中 N为数据 的长度) 的平均功率 P , 具体计算公式为: | . |2
Figure imgf000008_0001
步骤 S404, 对送入相关运算模块的数据 进行 RM译码后, 输出 译码数据 , 其中 J为译码数据的长度, 并且输出 RM译码过程中得到 的最大峰值 Peak和次峰值 SecPeak。 步骤 S406, 利用最大峰值 和次峰值 SecPe 以及第一步的数据平均 功率 计算可靠性因子 具体的计算公式如下: D = Peak2 _SecPeak2
Pow 在不容易获得次峰值的情况下, 也可以仅用峰值和需译码的数据的平均功率
Peak2
计算可靠性因子:
Pow 步骤 S408 , 将可靠性因子/)和给定阈值 thresh进行比较, 如果 7)大于等 于给定阈值 t/?re^ , 则认为译码出信道质量信息是可靠的, 那么可靠性标记 置为 1 , 即 F g = l ; 否则认为译码出信道质量信息是不可靠的, 那么可靠性 标记置为 0 , ? P Flag = 0„ 步骤 S410 , 根据可靠性标志 ¾^ , 自适应的选择滤波时的权重因子。 在本发明的上述实施中, 对于进行相关运算操作后的译码数据, 利用相 关运算后的最大峰值和次峰值进一步判断译码数据的可靠性, 解决了现有技 术中译码出的信息的可靠性判断问题,从而保证了译码出的信息的可靠有效。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者 将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书
1. 一种译码可靠性判断方法, 包括:
对需译码的数据进行相关运算, 并输出相关运算后的译码数据、 最 大峰值和次峰值;
根据所述最大峰值和所述次峰值以及需译码的数据的平均功率计算 可靠性因子;
将可靠性因子与预设的阈值进行比较, 根据比较结果确定所述译码 数据的可靠性。
2. 根据权利要求 1所述的方法, 其中, 根据所述最大峰值和所述次峰值以 及需译码的数据的平均功率计算可靠性因子之前, 还包括: 计算所述需译码的数据的平均功率。
3. 根据权利要求 2所述的方法, 其中, 所述平均功率的计算公式为:
N i=l,..w
其中, 7½w为需译码的数据的平均功率, 为需译码的数据, N为 数据的长度。
4. 根据权利要求 3所述的方法, 其中, 所述可靠性因子的计算公式为:
D _ Peak2 - SecPeak2
Pow
其中, 为可靠性因子, 为最大峰值, SecPe 为次峰值。
5. 根据权利要求 4所述的方法, 其中, 将可靠性因子与预设的阈值进行比 较, 根据比较结果确定所述译码数据的可靠性, 包括:
将所述可靠性因子与所述阈值进行比较, 如果所述可靠性因子大于 或等于所述阈值, 则确定所述译码数据是可靠的; 否则, 则确定所述译 码数据不可靠。
6. 一种译码可靠性判断装置, 包括: 相关运算模块, 设置为对需译码的数据进行相关运算, 并输出相关 运算后的译码数据、 最大峰值和次峰值;
可靠性因子计算模块, 设置为根据所述最大峰值和所述次峰值以及 需译码的数据的平均功率计算可靠性因子; 可靠性判断模块, 设置为将可靠性因子与预设的阈值进行比较, 根 据比较结果确定所述译码数据的可靠性。
7. 根据权利要求 6所述的装置, 其中, 还包括:
功率计算模块, 设置为计算所述需译码的数据的平均功率。
8. 根据权利要求 7所述的装置, 其中, 所述平均功率的计算公式为:
N i=l,..w
其中, 7½w为需译码的数据的平均功率, 为需译码的数据, N为 数据的长度。
9. 根据权利要求 8所述的装置, 其中, 所述可靠性因子的计算公式为:
D _ Peak2 - SecPeak2
Pow
其中, 为可靠性因子, 为最大峰值, SecPe 为次峰值。
10. 根据权利要求 9所述的装置, 其中, 可靠性判断模块还设置为:
将所述可靠性因子与所述阈值进行比较, 如果所述可靠性因子大于 或等于所述阈值, 则确定所述译码数据是可靠的; 否则, 则确定所述译 码数据不可靠。
11. 一种译码可靠性判断方法, 包括:
对需译码的数据进行相关运算, 并输出相关运算后的译码数据和最 大峰值;
根据所述最大峰值和需译码的数据的平均功率计算可靠性因子; 将可靠性因子与预设的阈值进行比较, 根据比较结果确定所述译码 数据的可靠性。
12. 根据权利要求 11所述的方法, 其中, 所述平均功率的计算公式为: N i=l,..w
其中, 7½w为需译码的数据的平均功率, 为需译码的数据, N为 数据的长度。
13. 根据权利要求 12所述的方法, 其中, 所述可靠性因子的计算公式为:
D _ Peak2
Pow
其中, /)为可靠性因子, 为最大峰值。
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