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    • 54. 发明公开
    • 시공간 주파수 블록 부호화 장치 및 방법
    • 空间时频块代码的装置和方法
    • KR1020090101152A
    • 2009-09-24
    • KR1020090086393
    • 2009-09-14
    • 삼성전자주식회사
    • 채찬병윤성렬정재학노원일정영호남승훈오정태고균병정홍실
    • H04L27/26H04B7/02H04B7/204
    • H04L1/0668H04L1/0625H04L27/36
    • PURPOSE: An apparatus and a method for encoding a space-time-frequency block are provided to maximize a coding gain of a space-time-frequency block code. CONSTITUTION: A transmitter of a communication system using three transmitting antennas includes a line encoder(104), a recombinator(106), a space-time-frequency block encoder(108) or a space-time block encoder. The line encoder outputs a line encoding symbol column with a shape in which an inputted symbol column is divided into a real number part and an imaginary number part. The recombinator groups a line encoding symbol from the line encoding symbol column. In a first real number part and a first imaginary number part of a first line encoding symbol, and a second real number part and a second imaginary number part of a second line encoding symbol, the first line encoding symbol is recombined by the first real number part and the second imaginary number part. The second line encoding symbol is recombined by the second real number part and the first imaginary number part.
    • 目的:提供一种用于编码空时频块的装置和方法,以使空时频块编码的编码增益最大化。 构成:使用三个发送天线的通信系统的发射机包括线路编码器(104),重组器(106),空时频率块编码器(108)或时空块编码器。 线编码器输出具有将输入的符号列划分成实数部分和虚数部分的形状的行编码符号列。 重组器从行编码符号列中对行编码符号进行分组。 在第一行编码符号的第一实数部分和第一虚数部分以及第二行编码符号的第二实数部分和第二虚数部分中,第一行编码符号由第一实数编号 部分和第二个虚数部分。 第二行编码符号由第二实数部分和第一虚数部分重新组合。
    • 59. 发明公开
    • 분산 무선 통신 시스템에서 심볼 에러율의 기반 직교 공간시간 블록 코드 겸 빔 형성을 위한 적응식 전송 파워 할당방법
    • 基于符号错误率的功率分配方案,用于组合正交空间时间块编码和分布式无线通信系统中的波束形成
    • KR1020080046420A
    • 2008-05-27
    • KR1020060115851
    • 2006-11-22
    • 삼성전자주식회사
    • 한,슈앙펑황성택김훈김상호조재헌이재훈송기욱
    • H04B7/04H04B7/26H04L27/26H04L1/02
    • H04W52/42H04B7/043H04B7/0617H04B7/0691H04L1/0625H04L1/0668H04W52/04
    • A symbol error rate-based adaptive power allocation scheme for OSTBC and beam forming in a DWCS is provided to estimate large-scale fading and nakagami fading parameters in a transmitter, thereby minimizing the SER of MQAM(M-ary Quadrature Amplitude Modulation) and MPSK(M-ary Phase Shift Keying) symbols. A adaptive power allocation scheme for OSTBC(Orthogonal Space Time Block Codes) and beam forming in a DWCS(Distributed Wireless Communication System) comprises the following steps of: setting i to one, A to Ai, and P and P0 to one, wherein A is the optimal antenna sub set, and P is a quasi or optimal SER(Symbol Error Rate)(401); estimating DOA(Direction Of Arrival) for each sub array and generating an array response vector for the each antenna sub array(402); calculating a quasi or optimal SER Pi for the sub set Ai by using quasi and optimal power allocation schemes, PAS1(Power Allocation Scheme1) and PAS2(403); checking whether the calculated SER Pi is less than or equal to Pi-1(404); setting A to Ai and P to Pi if the Pi is less than or equal to Pi-1(405); checking whether I is less than 2^l-1(406); and adding one to i when I is less than 2^l-1(407).
    • 提供了用于OSTBC和DWCS中的波束形成的基于符号误码率的自适应功率分配方案以估计发射机中的大规模衰落衰减和Nakagami衰落参数,从而最小化MQAM(M进制正交幅度调制)和MPSK (M元相移键控)符号。 在DWCS(分布式无线通信系统)中的OSTBC(正交空时块)和波束形成的自适应功率分配方案包括以下步骤:将i设置为A,将Ai设置为Ai,将P和P0设置为1,其中A 是最优天线子集,P是准或最优SER(符号错误率)(401); 估计每个子阵列的DOA(到达方向)并产生每个天线子阵列(402)的阵列响应向量; 通过使用准和最佳功率分配方案PAS1(功率分配方案1)和PAS2(403),为子集Ai计算准或最优的SER Pi; 检查计算的SER Pi是否小于或等于Pi-1(404); 如果Pi小于或等于Pi-1(405),则将A设置为Ai并将P设置为Pi 检查我是否小于2 ^ 1-1(406); 并且当我小于2 ^ 1 -1(407)时,加上一个。