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Method for generating periodic polyphase complementary sequence sets

A sequence set and periodic autocorrelation technology, which is applied in the communication between multiple stations, power management, electrical components, etc., can solve the problem that the number of subsequences and the length of subsequences in multi-complementary sequence sets cannot be set arbitrarily

Inactive Publication Date: 2011-01-26
CHONGQING WIRELESS OASIS COMM TECHCO
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Problems solved by technology

The common disadvantage of these two methods is that the number of subsequences and the length of subsequences of the obtained multi-complementary sequence set cannot be set arbitrarily

Method used

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  • Method for generating periodic polyphase complementary sequence sets
  • Method for generating periodic polyphase complementary sequence sets
  • Method for generating periodic polyphase complementary sequence sets

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Embodiment Construction

[0062] The core of the method for generating a periodic multi-complementary sequence set of the present invention is to obtain a group of subsequences by continuously sampling the perfect sequence at equal intervals, and then obtain a periodic multi-complementary sequence set by combining the sub-sequences.

[0063] figure 1 It shows the principle of the present invention to obtain a periodic multi-complementary sequence set by sampling the perfect sequence at equal intervals N-1 consecutively. Such as figure 1 As shown, the length L of the perfect sequence to be sampled is NM symbols, and the complementary sequence has N subsequences, each of which has a length of M symbols. For the convenience of representation, it is assumed that the symbol a of the perfect sequence is selected λ (0≤λ≤L-1) is the starting symbol, and the subsequence number is marked as (λ+i) N (0≤i≤N-1), where symbol (x) N Indicates to find the remainder of modulus N for x. The notation of the sub-seria...

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Abstract

The invention discloses a method for generating periodic polyphase complementary sequence sets, which comprises the following steps of: continuously sampling perfect sequences at an equal interval to obtain a group of subsequences; and combining the subsequences in the group to obtain the periodic polyphase complementary sequence sets, wherein the summation of periodic autocorrelation functions of all the subsequences has impulse characteristics; the number of the obtained complementary sets is the same as that of the adopted perfect sequences; and the lengths and number of the subsequences can be regulated in real time and selected flexibly according to the needs of actual factors. The method can be used for realizing the application of multi-access interference-free transmission of communication systems, channel estimation, the synchronization of the communication systems, reduction in a peak-to-average power ratio (PAPR), the design of other signals (such as quasi-barker codes, low / zero-correlation zone sequences and the like), and the like.

Description

technical field [0001] The present invention relates to a communication sequence, in particular to the transmission without multiple access interference, channel estimation, synchronization of the communication system, the reduction of the peak-to-average power ratio (PAPR), and the design of other signals with impulse period autocorrelation characteristics. The generation method of the set of periodic complementary sequences. Background technique [0002] In many practical communication engineering system designs, multiple access interference suppression, channel estimation, synchronization, peak-to-average power ratio (PAPR) and other factors must be considered. In addition, there is a need to design signals with special characteristics in order to improve the performance of communication systems. [0003] (1) Multiple Access Interference Suppression [0004] It is precisely because of the use of multiple access technology that the communication system can accommodate mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/00H04B7/26
CPCY02B60/50
Inventor 曾凡鑫张振宇
Owner CHONGQING WIRELESS OASIS COMM TECHCO
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