Receiving apparatus and method for receiving signals in a wireless communication system

A wireless communication system and a technology for receiving signals, applied to transmitter/receiver shaping networks, transmission systems, baseband systems, etc., capable of solving problems such as divider output differences

Inactive Publication Date: 2010-12-15
SONY CORP
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  • Abstract
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  • Claims
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Problems solved by technology

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  • Receiving apparatus and method for receiving signals in a wireless communication system
  • Receiving apparatus and method for receiving signals in a wireless communication system
  • Receiving apparatus and method for receiving signals in a wireless communication system

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Embodiment Construction

[0027] Figure 4 A schematic block diagram of a receiving device 11 of the present invention is shown, comprising an antenna 1 for receiving radio signals in a radio communication system. The wireless communication system may be a single-carrier wireless communication system or a multi-carrier wireless communication system. Throughout the application, the same elements are assigned the same reference numerals.

[0028] Such as Figure 4 The shown receiving device 11 is adapted to receive radio signals via the antenna 1 . The received signal is then forwarded to receiving means 2, which are adapted to downconvert the received signal to baseband. The down-converted signal is then processed in automatic gain control means 3 which performs automatic gain control on the received signal. Thereafter, equalization means 7 performs equalization on the received signal based on the result of channel estimation performed by channel estimator 8 based on the channel estimation sequence ...

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Abstract

The present invention relates to a receiving apparatus (11) for receiving signals in a wireless communication system, in which the signals comprise a dedicated channel estimation sequence, comprising a gain control means (3) adapted to control the gain of a received signal, a channel estimation means (8) adapted to perform a channel estimation on the basis of a dedicated channel estimation sequence comprised in a received signal, a gain error correction means (12) adapted to correct a gain error in the result of said channel estimation caused by said gain control means (3) on the basis of said dedicated channel estimation sequence comprised in the received signal, and an equalizing means (7) adapted to perform an equalization on the received signal on the basis of the gain corrected channel estimation result. The present invention further relates to a corresponding receiving method.

Description

technical field [0001] The present invention relates to a receiving device and method for receiving signals in a wireless communication system. In particular, the invention is directed to the improvement of equalization. Background technique [0002] For high data rate indoor wireless systems, such as single-carrier wireless systems exceeding 1Gbps, the wireless channel delay spread may exceed tens of symbols, which makes it not recommended to use conventional adaptive equalizers including linear, decision feedback, or maximum Likelihood sequence estimation (Maximumlikelihood sequence estimation, MLSE) equalizer. One reason is that adaptive linear equalizers, including linear or decision feedback equalizers, have difficulty converging in a short training period when the wireless channel delay spread exceeds tens of symbols. Furthermore, the performance of the pilot-aided non-adaptive linear equalizer is not good, and when the wireless channel delay spread exceeds tens of s...

Claims

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Application Information

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IPC IPC(8): H04L25/03H04L25/02H04L27/26
CPCH04L27/01H04L25/0224H04L25/022H04L25/03159
Inventor 王昭诚王琪
Owner SONY CORP
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